diff --git a/x/avalanche/module.go b/x/avalanche/module.go
index 7de4c5fba..a5292c478 100644
--- a/x/avalanche/module.go
+++ b/x/avalanche/module.go
@@ -111,12 +111,7 @@ func (am AppModule) LegacyQuerierHandler(*codec.LegacyAmino) sdk.Querier {
 }
 
 // RegisterServices registers module services.
-func (am AppModule) RegisterServices(cfg module.Configurator) {
-	migrator := crosschainkeeper.NewMigrator(am.keeper, am.legacySubspace)
-	if err := cfg.RegisterMigration(am.Name(), 1, migrator.Migrate3to4); err != nil {
-		panic(err)
-	}
-}
+func (am AppModule) RegisterServices(cfg module.Configurator) {}
 
 // InitGenesis initializes the genesis state for this module and implements app module.
 func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, data json.RawMessage) []abci.ValidatorUpdate {
diff --git a/x/bsc/module.go b/x/bsc/module.go
index 74b39a440..6fc21dcf8 100644
--- a/x/bsc/module.go
+++ b/x/bsc/module.go
@@ -111,12 +111,7 @@ func (am AppModule) LegacyQuerierHandler(*codec.LegacyAmino) sdk.Querier {
 }
 
 // RegisterServices registers module services.
-func (am AppModule) RegisterServices(cfg module.Configurator) {
-	migrator := crosschainkeeper.NewMigrator(am.keeper, am.legacySubspace)
-	if err := cfg.RegisterMigration(am.Name(), 3, migrator.Migrate3to4); err != nil {
-		panic(err)
-	}
-}
+func (am AppModule) RegisterServices(cfg module.Configurator) {}
 
 // InitGenesis initializes the genesis state for this module and implements app module.
 func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, data json.RawMessage) []abci.ValidatorUpdate {
diff --git a/x/crosschain/keeper/migrations.go b/x/crosschain/keeper/migrations.go
deleted file mode 100644
index 4ec265ce4..000000000
--- a/x/crosschain/keeper/migrations.go
+++ /dev/null
@@ -1,32 +0,0 @@
-package keeper
-
-import (
-	sdk "github.com/cosmos/cosmos-sdk/types"
-
-	v4 "github.com/functionx/fx-core/v7/x/crosschain/migrations/v4"
-	"github.com/functionx/fx-core/v7/x/crosschain/types"
-)
-
-// Migrator is a struct for handling in-place store migrations.
-type Migrator struct {
-	keeper         Keeper
-	legacySubspace types.Subspace
-}
-
-func NewMigrator(k Keeper, ss types.Subspace) Migrator {
-	return Migrator{
-		keeper:         k,
-		legacySubspace: ss,
-	}
-}
-
-// Migrate3to4 migrates the x/crosschain module state from the consensus version 3 to
-// version 4. Specifically, it takes the parameters that are currently stored
-// and managed by the x/params modules and stores them directly into the x/crosschain
-// module state.
-func (m Migrator) Migrate3to4(ctx sdk.Context) error {
-	if err := v4.MigratorParam(ctx, m.legacySubspace, m.keeper.storeKey, m.keeper.cdc); err != nil {
-		return err
-	}
-	return nil
-}
diff --git a/x/crosschain/migrations/v4/migrator_param.go b/x/crosschain/migrations/v4/migrator_param.go
deleted file mode 100644
index e549b4fd6..000000000
--- a/x/crosschain/migrations/v4/migrator_param.go
+++ /dev/null
@@ -1,23 +0,0 @@
-package v4
-
-import (
-	"github.com/cosmos/cosmos-sdk/codec"
-	storetypes "github.com/cosmos/cosmos-sdk/store/types"
-	sdk "github.com/cosmos/cosmos-sdk/types"
-
-	"github.com/functionx/fx-core/v7/x/crosschain/types"
-)
-
-func MigratorParam(ctx sdk.Context, legacySubspace types.Subspace, storeKey storetypes.StoreKey, cdc codec.BinaryCodec) error {
-	if !legacySubspace.HasKeyTable() {
-		legacySubspace.WithKeyTable(types.ParamKeyTable())
-	}
-	var currParams types.Params
-	legacySubspace.GetParamSet(ctx, &currParams)
-	if err := currParams.ValidateBasic(); err != nil {
-		return err
-	}
-	bz := cdc.MustMarshal(&currParams)
-	ctx.KVStore(storeKey).Set(types.ParamsKey, bz)
-	return nil
-}
diff --git a/x/crosschain/migrations/v4/migrator_param_test.go b/x/crosschain/migrations/v4/migrator_param_test.go
deleted file mode 100644
index a15c9d04d..000000000
--- a/x/crosschain/migrations/v4/migrator_param_test.go
+++ /dev/null
@@ -1,74 +0,0 @@
-package v4_test
-
-import (
-	"testing"
-
-	"github.com/cosmos/cosmos-sdk/simapp"
-	"github.com/cosmos/cosmos-sdk/testutil"
-	sdk "github.com/cosmos/cosmos-sdk/types"
-	paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
-	"github.com/stretchr/testify/require"
-
-	bsctypes "github.com/functionx/fx-core/v7/x/bsc/types"
-	v4 "github.com/functionx/fx-core/v7/x/crosschain/migrations/v4"
-	"github.com/functionx/fx-core/v7/x/crosschain/types"
-)
-
-type mockSubspace struct {
-	ps types.Params
-}
-
-func newMockSubspace(ps types.Params) mockSubspace {
-	return mockSubspace{ps: ps}
-}
-
-func (ms mockSubspace) GetParamSet(_ sdk.Context, ps paramtypes.ParamSet) {
-	*ps.(*types.Params) = ms.ps
-}
-
-func (ms mockSubspace) HasKeyTable() bool {
-	return false
-}
-
-func (ms mockSubspace) WithKeyTable(_ paramtypes.KeyTable) paramtypes.Subspace {
-	return paramtypes.Subspace{}
-}
-
-func TestStoreMigration(t *testing.T) {
-	encCfg := simapp.MakeTestEncodingConfig()
-	bscKey := sdk.NewKVStoreKey(bsctypes.ModuleName)
-	tBscKey := sdk.NewTransientStoreKey("transient_test")
-	ctx := testutil.DefaultContext(bscKey, tBscKey)
-	store := ctx.KVStore(bscKey)
-
-	legacySubspace := newMockSubspace(types.DefaultParams())
-
-	testCases := []struct {
-		name        string
-		doMigration bool
-	}{
-		{
-			name:        "without state migration",
-			doMigration: false,
-		},
-		{
-			name:        "with state migration",
-			doMigration: true,
-		},
-	}
-	for _, tc := range testCases {
-		t.Run(tc.name, func(t *testing.T) {
-			if tc.doMigration {
-				require.NoError(t, v4.MigratorParam(ctx, legacySubspace, bscKey, encCfg.Codec))
-			}
-			if tc.doMigration {
-				var res types.Params
-				bz := store.Get(types.ParamsKey)
-				require.NoError(t, encCfg.Codec.Unmarshal(bz, &res))
-				require.Equal(t, legacySubspace.ps, res)
-			} else {
-				require.Equal(t, true, true)
-			}
-		})
-	}
-}
diff --git a/x/erc20/keeper/migrations.go b/x/erc20/keeper/migrations.go
deleted file mode 100644
index df3afae7d..000000000
--- a/x/erc20/keeper/migrations.go
+++ /dev/null
@@ -1,33 +0,0 @@
-package keeper
-
-import (
-	sdk "github.com/cosmos/cosmos-sdk/types"
-
-	v4 "github.com/functionx/fx-core/v7/x/erc20/migrations/v4"
-	"github.com/functionx/fx-core/v7/x/erc20/types"
-)
-
-// Migrator is a struct for handling in-place store migrations.
-type Migrator struct {
-	keeper         Keeper
-	legacySubspace types.Subspace
-}
-
-// NewMigrator returns a new Migrator.
-func NewMigrator(keeper Keeper, ss types.Subspace) Migrator {
-	return Migrator{
-		keeper:         keeper,
-		legacySubspace: ss,
-	}
-}
-
-// Migrate3to4 migrates the x/erc20 module state from the consensus version 3 to
-// version 4. Specifically, it takes the parameters that are currently stored
-// and managed by the x/params modules and stores them directly into the x/erc20
-// module state.
-func (k Migrator) Migrate3to4(ctx sdk.Context) error {
-	if err := v4.MigratorParam(ctx, k.legacySubspace, k.keeper.storeKey, k.keeper.cdc); err != nil {
-		return err
-	}
-	return nil
-}
diff --git a/x/erc20/migrations/v4/migrator_param.go b/x/erc20/migrations/v4/migrator_param.go
deleted file mode 100644
index 1803958cc..000000000
--- a/x/erc20/migrations/v4/migrator_param.go
+++ /dev/null
@@ -1,23 +0,0 @@
-package v4
-
-import (
-	"github.com/cosmos/cosmos-sdk/codec"
-	storetypes "github.com/cosmos/cosmos-sdk/store/types"
-	sdk "github.com/cosmos/cosmos-sdk/types"
-
-	"github.com/functionx/fx-core/v7/x/erc20/types"
-)
-
-func MigratorParam(ctx sdk.Context, legacySubspace types.Subspace, storeKey storetypes.StoreKey, cdc codec.BinaryCodec) error {
-	if !legacySubspace.HasKeyTable() {
-		legacySubspace.WithKeyTable(types.ParamKeyTable())
-	}
-	var currParams types.Params
-	legacySubspace.GetParamSet(ctx, &currParams)
-	if err := currParams.Validate(); err != nil {
-		return err
-	}
-	bz := cdc.MustMarshal(&currParams)
-	ctx.KVStore(storeKey).Set(types.ParamsKey, bz)
-	return nil
-}
diff --git a/x/erc20/migrations/v4/migrator_param_test.go b/x/erc20/migrations/v4/migrator_param_test.go
deleted file mode 100644
index 07eee483f..000000000
--- a/x/erc20/migrations/v4/migrator_param_test.go
+++ /dev/null
@@ -1,73 +0,0 @@
-package v4_test
-
-import (
-	"testing"
-
-	"github.com/cosmos/cosmos-sdk/simapp"
-	"github.com/cosmos/cosmos-sdk/testutil"
-	sdk "github.com/cosmos/cosmos-sdk/types"
-	paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
-	"github.com/stretchr/testify/require"
-
-	v4 "github.com/functionx/fx-core/v7/x/erc20/migrations/v4"
-	"github.com/functionx/fx-core/v7/x/erc20/types"
-)
-
-type mockSubspace struct {
-	ps types.Params
-}
-
-func newMockSubspace(ps types.Params) mockSubspace {
-	return mockSubspace{ps: ps}
-}
-
-func (ms mockSubspace) GetParamSet(_ sdk.Context, ps paramtypes.ParamSet) {
-	*ps.(*types.Params) = ms.ps
-}
-
-func (ms mockSubspace) HasKeyTable() bool {
-	return false
-}
-
-func (ms mockSubspace) WithKeyTable(_ paramtypes.KeyTable) paramtypes.Subspace {
-	return paramtypes.Subspace{}
-}
-
-func TestStoreMigration(t *testing.T) {
-	encCfg := simapp.MakeTestEncodingConfig()
-	erc20Key := sdk.NewKVStoreKey(types.ModuleName)
-	tBscKey := sdk.NewTransientStoreKey("transient_test")
-	ctx := testutil.DefaultContext(erc20Key, tBscKey)
-	store := ctx.KVStore(erc20Key)
-
-	legacySubspace := newMockSubspace(types.DefaultParams())
-
-	testCases := []struct {
-		name        string
-		doMigration bool
-	}{
-		{
-			name:        "without state migration",
-			doMigration: false,
-		},
-		{
-			name:        "with state migration",
-			doMigration: true,
-		},
-	}
-	for _, tc := range testCases {
-		t.Run(tc.name, func(t *testing.T) {
-			if tc.doMigration {
-				require.NoError(t, v4.MigratorParam(ctx, legacySubspace, erc20Key, encCfg.Codec))
-			}
-			if tc.doMigration {
-				var res types.Params
-				bz := store.Get(types.ParamsKey)
-				require.NoError(t, encCfg.Codec.Unmarshal(bz, &res))
-				require.Equal(t, legacySubspace.ps, res)
-			} else {
-				require.Equal(t, true, true)
-			}
-		})
-	}
-}
diff --git a/x/erc20/module.go b/x/erc20/module.go
index 4f70a277f..bfde0a10b 100644
--- a/x/erc20/module.go
+++ b/x/erc20/module.go
@@ -119,11 +119,6 @@ func (am AppModule) LegacyQuerierHandler(*codec.LegacyAmino) sdk.Querier {
 func (am AppModule) RegisterServices(cfg module.Configurator) {
 	types.RegisterMsgServer(cfg.MsgServer(), am.keeper)
 	types.RegisterQueryServer(cfg.QueryServer(), am.keeper)
-
-	migrator := keeper.NewMigrator(am.keeper, am.legacySubspace)
-	if err := cfg.RegisterMigration(types.ModuleName, 2, migrator.Migrate3to4); err != nil {
-		panic(err)
-	}
 }
 
 // InitGenesis performs the capability module's genesis initialization It returns
diff --git a/x/eth/module.go b/x/eth/module.go
index 30285a2d2..97ac1177f 100644
--- a/x/eth/module.go
+++ b/x/eth/module.go
@@ -111,12 +111,7 @@ func (am AppModule) LegacyQuerierHandler(*codec.LegacyAmino) sdk.Querier {
 }
 
 // RegisterServices registers module services.
-func (am AppModule) RegisterServices(cfg module.Configurator) {
-	migrator := crosschainkeeper.NewMigrator(am.keeper, am.legacySubspace)
-	if err := cfg.RegisterMigration(am.Name(), 1, migrator.Migrate3to4); err != nil {
-		panic(err)
-	}
-}
+func (am AppModule) RegisterServices(cfg module.Configurator) {}
 
 // InitGenesis initializes the genesis state for this module and implements app module.
 func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, data json.RawMessage) []abci.ValidatorUpdate {
diff --git a/x/gov/keeper/migrations.go b/x/gov/keeper/migrations.go
deleted file mode 100644
index f992da59b..000000000
--- a/x/gov/keeper/migrations.go
+++ /dev/null
@@ -1,30 +0,0 @@
-package keeper
-
-import (
-	"github.com/cosmos/cosmos-sdk/codec"
-	sdk "github.com/cosmos/cosmos-sdk/types"
-	govkeeper "github.com/cosmos/cosmos-sdk/x/gov/keeper"
-
-	fxv046 "github.com/functionx/fx-core/v7/x/gov/migrations/v046"
-)
-
-// Migrator is a struct for handling in-place store migrations.
-type Migrator struct {
-	cdc    codec.BinaryCodec
-	keeper Keeper
-	govkeeper.Migrator
-}
-
-// NewMigrator returns a new Migrator.
-func NewMigrator(cdc codec.Codec, keeper Keeper) Migrator {
-	return Migrator{
-		cdc:      cdc,
-		keeper:   keeper,
-		Migrator: govkeeper.NewMigrator(keeper.Keeper),
-	}
-}
-
-// Migrate2to3 migrates from version 2 to 3.
-func (m Migrator) Migrate2to3(ctx sdk.Context) error {
-	return fxv046.MigrateStore(ctx, m.keeper.storeKey, m.cdc)
-}
diff --git a/x/gov/migrations/v046/convert.go b/x/gov/migrations/v046/convert.go
deleted file mode 100644
index 230162875..000000000
--- a/x/gov/migrations/v046/convert.go
+++ /dev/null
@@ -1,53 +0,0 @@
-package v046
-
-import (
-	"encoding/base64"
-	"encoding/json"
-
-	codectypes "github.com/cosmos/cosmos-sdk/codec/types"
-	errortypes "github.com/cosmos/cosmos-sdk/types/errors"
-	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
-	govtypes "github.com/cosmos/cosmos-sdk/x/gov/types"
-	v1 "github.com/cosmos/cosmos-sdk/x/gov/types/v1"
-	"github.com/cosmos/cosmos-sdk/x/gov/types/v1beta1"
-
-	fxgovtypes "github.com/functionx/fx-core/v7/x/gov/types"
-)
-
-func convertToNewProposal(oldProp v1beta1.Proposal) (v1.Proposal, error) {
-	msg, err := v1.NewLegacyContent(oldProp.GetContent(), authtypes.NewModuleAddress(govtypes.ModuleName).String())
-	if err != nil {
-		return v1.Proposal{}, err
-	}
-	msgAny, err := codectypes.NewAnyWithValue(msg)
-	if err != nil {
-		return v1.Proposal{}, err
-	}
-
-	fxMetadata := fxgovtypes.FXMetadata{
-		Title:   oldProp.GetContent().GetTitle(),
-		Summary: oldProp.GetContent().GetDescription(),
-	}
-	mdBytes, err := json.Marshal(fxMetadata)
-	if err != nil {
-		return v1.Proposal{}, errortypes.ErrInvalidRequest.Wrapf("proposal metadata: %s", err.Error())
-	}
-
-	return v1.Proposal{
-		Id:       oldProp.ProposalId,
-		Messages: []*codectypes.Any{msgAny},
-		Status:   v1.ProposalStatus(oldProp.Status),
-		FinalTallyResult: &v1.TallyResult{
-			YesCount:        oldProp.FinalTallyResult.Yes.String(),
-			NoCount:         oldProp.FinalTallyResult.No.String(),
-			AbstainCount:    oldProp.FinalTallyResult.Abstain.String(),
-			NoWithVetoCount: oldProp.FinalTallyResult.NoWithVeto.String(),
-		},
-		SubmitTime:      &oldProp.SubmitTime,
-		DepositEndTime:  &oldProp.DepositEndTime,
-		TotalDeposit:    oldProp.TotalDeposit,
-		VotingStartTime: &oldProp.VotingStartTime,
-		VotingEndTime:   &oldProp.VotingEndTime,
-		Metadata:        base64.StdEncoding.EncodeToString(mdBytes),
-	}, nil
-}
diff --git a/x/gov/migrations/v046/store.go b/x/gov/migrations/v046/store.go
deleted file mode 100644
index 5da5d253f..000000000
--- a/x/gov/migrations/v046/store.go
+++ /dev/null
@@ -1,95 +0,0 @@
-package v046
-
-import (
-	"github.com/cosmos/cosmos-sdk/codec"
-	"github.com/cosmos/cosmos-sdk/store/prefix"
-	storetypes "github.com/cosmos/cosmos-sdk/store/types"
-	sdk "github.com/cosmos/cosmos-sdk/types"
-	v042 "github.com/cosmos/cosmos-sdk/x/gov/migrations/v042"
-	govv1 "github.com/cosmos/cosmos-sdk/x/gov/types/v1"
-	govv1beta1 "github.com/cosmos/cosmos-sdk/x/gov/types/v1beta1"
-)
-
-// migrateProposals migrates all legacy proposals into MsgExecLegacyContent
-// proposals.
-func migrateProposals(store sdk.KVStore, cdc codec.BinaryCodec) error {
-	propStore := prefix.NewStore(store, v042.ProposalsKeyPrefix)
-
-	iter := propStore.Iterator(nil, nil)
-	defer iter.Close()
-
-	for ; iter.Valid(); iter.Next() {
-		var oldProp govv1beta1.Proposal
-		err := cdc.Unmarshal(iter.Value(), &oldProp)
-		if err != nil {
-			return err
-		}
-
-		newProp, err := convertToNewProposal(oldProp)
-		if err != nil {
-			return err
-		}
-		bz, err := cdc.Marshal(&newProp)
-		if err != nil {
-			return err
-		}
-
-		// Set new value on store.
-		propStore.Set(iter.Key(), bz)
-	}
-
-	return nil
-}
-
-// migrateVotes migrates all v1beta1 weighted votes (with sdk.Dec as weight)
-// to v1 weighted votes (with string as weight)
-func migrateVotes(store sdk.KVStore, cdc codec.BinaryCodec) error {
-	votesStore := prefix.NewStore(store, v042.VotesKeyPrefix)
-
-	iter := votesStore.Iterator(nil, nil)
-	defer iter.Close()
-
-	for ; iter.Valid(); iter.Next() {
-		var oldVote govv1beta1.Vote
-		err := cdc.Unmarshal(iter.Value(), &oldVote)
-		if err != nil {
-			return err
-		}
-
-		newVote := govv1.Vote{
-			ProposalId: oldVote.ProposalId,
-			Voter:      oldVote.Voter,
-		}
-		newOptions := make([]*govv1.WeightedVoteOption, len(oldVote.Options))
-		for i, o := range oldVote.Options {
-			newOptions[i] = &govv1.WeightedVoteOption{
-				Option: govv1.VoteOption(o.Option),
-				Weight: o.Weight.String(), // Convert to decimal string
-			}
-		}
-		newVote.Options = newOptions
-		bz, err := cdc.Marshal(&newVote)
-		if err != nil {
-			return err
-		}
-
-		// Set new value on store.
-		votesStore.Set(iter.Key(), bz)
-	}
-
-	return nil
-}
-
-// MigrateStore performs in-place store migrations from v2 (v0.43) to v3 (v0.46). The
-// migration includes:
-//
-// - Migrate proposals to be Msg-based.
-func MigrateStore(ctx sdk.Context, storeKey storetypes.StoreKey, cdc codec.BinaryCodec) error {
-	store := ctx.KVStore(storeKey)
-
-	if err := migrateVotes(store, cdc); err != nil {
-		return err
-	}
-
-	return migrateProposals(store, cdc)
-}
diff --git a/x/gov/migrations/v046/store_test.go b/x/gov/migrations/v046/store_test.go
deleted file mode 100644
index 30a297df5..000000000
--- a/x/gov/migrations/v046/store_test.go
+++ /dev/null
@@ -1,103 +0,0 @@
-package v046_test
-
-import (
-	"testing"
-	"time"
-
-	"github.com/cosmos/cosmos-sdk/simapp"
-	"github.com/cosmos/cosmos-sdk/testutil"
-	sdk "github.com/cosmos/cosmos-sdk/types"
-	v042gov "github.com/cosmos/cosmos-sdk/x/gov/migrations/v042"
-	v1 "github.com/cosmos/cosmos-sdk/x/gov/types/v1"
-	"github.com/cosmos/cosmos-sdk/x/gov/types/v1beta1"
-	upgradetypes "github.com/cosmos/cosmos-sdk/x/upgrade/types"
-	"github.com/stretchr/testify/require"
-
-	fxv046 "github.com/functionx/fx-core/v7/x/gov/migrations/v046"
-	fxgovtypes "github.com/functionx/fx-core/v7/x/gov/types"
-)
-
-var voter = sdk.MustAccAddressFromBech32("cosmos1fl48vsnmsdzcv85q5d2q4z5ajdha8yu34mf0eh")
-
-func TestMigrateStore(t *testing.T) {
-	cdc := simapp.MakeTestEncodingConfig().Codec
-	govKey := sdk.NewKVStoreKey("gov")
-	ctx := testutil.DefaultContext(govKey, sdk.NewTransientStoreKey("transient_test"))
-	store := ctx.KVStore(govKey)
-
-	propTime := time.Unix(1e9, 0)
-
-	// Create 2 proposals
-	prop1, err := v1beta1.NewProposal(v1beta1.NewTextProposal("my title 1", "my desc 1"), 1, propTime, propTime)
-	require.NoError(t, err)
-	prop1Bz, err := cdc.Marshal(&prop1)
-	require.NoError(t, err)
-	prop2, err := v1beta1.NewProposal(upgradetypes.NewSoftwareUpgradeProposal("my title 2", "my desc 2", upgradetypes.Plan{
-		Name: "my plan 2",
-	}), 2, propTime, propTime)
-	require.NoError(t, err)
-	prop2Bz, err := cdc.Marshal(&prop2)
-	require.NoError(t, err)
-
-	store.Set(v042gov.ProposalKey(prop1.ProposalId), prop1Bz)
-	store.Set(v042gov.ProposalKey(prop2.ProposalId), prop2Bz)
-
-	// Vote on prop 1
-	options := []v1beta1.WeightedVoteOption{
-		{Option: v1beta1.OptionNo, Weight: sdk.MustNewDecFromStr("0.3")},
-		{Option: v1beta1.OptionYes, Weight: sdk.MustNewDecFromStr("0.7")},
-	}
-	vote1 := v1beta1.NewVote(1, voter, options)
-	vote1Bz := cdc.MustMarshal(&vote1)
-	store.Set(v042gov.VoteKey(1, voter), vote1Bz)
-
-	// Run migrations.
-	err = fxv046.MigrateStore(ctx, govKey, cdc)
-	require.NoError(t, err)
-
-	var newProp1 v1.Proposal
-	err = cdc.Unmarshal(store.Get(v042gov.ProposalKey(prop1.ProposalId)), &newProp1)
-	require.NoError(t, err)
-	compareProps(t, prop1, newProp1)
-
-	var newProp2 v1.Proposal
-	err = cdc.Unmarshal(store.Get(v042gov.ProposalKey(prop2.ProposalId)), &newProp2)
-	require.NoError(t, err)
-	compareProps(t, prop2, newProp2)
-
-	var newVote1 v1.Vote
-	err = cdc.Unmarshal(store.Get(v042gov.VoteKey(prop1.ProposalId, voter)), &newVote1)
-	require.NoError(t, err)
-	// Without the votes migration, we would have 300000000000000000 in state,
-	// because of how sdk.Dec stores itself in state.
-	require.Equal(t, "0.300000000000000000", newVote1.Options[0].Weight)
-	require.Equal(t, "0.700000000000000000", newVote1.Options[1].Weight)
-}
-
-func compareProps(t *testing.T, oldProp v1beta1.Proposal, newProp v1.Proposal) {
-	require.Equal(t, oldProp.ProposalId, newProp.Id)
-	require.Equal(t, oldProp.TotalDeposit.String(), sdk.Coins(newProp.TotalDeposit).String())
-	require.Equal(t, oldProp.Status.String(), newProp.Status.String())
-	require.Equal(t, oldProp.FinalTallyResult.Yes.String(), newProp.FinalTallyResult.YesCount)
-	require.Equal(t, oldProp.FinalTallyResult.No.String(), newProp.FinalTallyResult.NoCount)
-	require.Equal(t, oldProp.FinalTallyResult.NoWithVeto.String(), newProp.FinalTallyResult.NoWithVetoCount)
-	require.Equal(t, oldProp.FinalTallyResult.Abstain.String(), newProp.FinalTallyResult.AbstainCount)
-
-	newContent := newProp.Messages[0].GetCachedValue().(*v1.MsgExecLegacyContent).Content.GetCachedValue().(v1beta1.Content)
-	require.Equal(t, oldProp.Content.GetCachedValue().(v1beta1.Content), newContent)
-
-	// Compare UNIX times, as a simple Equal gives difference between Local and
-	// UTC times.
-	// ref: https://github.com/golang/go/issues/19486#issuecomment-292968278
-	require.Equal(t, oldProp.SubmitTime.Unix(), newProp.SubmitTime.Unix())
-	require.Equal(t, oldProp.DepositEndTime.Unix(), newProp.DepositEndTime.Unix())
-	require.Equal(t, oldProp.VotingStartTime.Unix(), newProp.VotingStartTime.Unix())
-	require.Equal(t, oldProp.VotingEndTime.Unix(), newProp.VotingEndTime.Unix())
-
-	require.True(t, len(newProp.Metadata) > 0)
-	fxMd, err := fxgovtypes.ParseFXMetadata(newProp.Metadata)
-	require.NoError(t, err)
-	require.Equal(t, oldProp.GetContent().GetTitle(), fxMd.Title)
-	require.Equal(t, oldProp.GetContent().GetDescription(), fxMd.Summary)
-	require.Equal(t, "", fxMd.Metadata)
-}
diff --git a/x/gov/module.go b/x/gov/module.go
index ef0d2e6aa..18d066526 100644
--- a/x/gov/module.go
+++ b/x/gov/module.go
@@ -108,16 +108,6 @@ func (am AppModule) RegisterServices(cfg module.Configurator) {
 	//  fx gov
 	types.RegisterMsgServer(cfg.MsgServer(), msgServer)
 	types.RegisterQueryServer(cfg.QueryServer(), am.keeper)
-
-	m := keeper.NewMigrator(am.cdc, am.keeper)
-	err := cfg.RegisterMigration(govtypes.ModuleName, 1, m.Migrate1to2)
-	if err != nil {
-		panic(err)
-	}
-	err = cfg.RegisterMigration(govtypes.ModuleName, 2, m.Migrate2to3)
-	if err != nil {
-		panic(err)
-	}
 }
 
 // InitGenesis performs genesis initialization for the gov module. It returns
diff --git a/x/polygon/module.go b/x/polygon/module.go
index e26a47264..f9f69484e 100644
--- a/x/polygon/module.go
+++ b/x/polygon/module.go
@@ -107,12 +107,7 @@ func (am AppModule) LegacyQuerierHandler(*codec.LegacyAmino) sdk.Querier {
 }
 
 // RegisterServices registers module services.
-func (am AppModule) RegisterServices(cfg module.Configurator) {
-	migrator := crosschainkeeper.NewMigrator(am.keeper, am.legacySubspace)
-	if err := cfg.RegisterMigration(am.Name(), 3, migrator.Migrate3to4); err != nil {
-		panic(err)
-	}
-}
+func (am AppModule) RegisterServices(cfg module.Configurator) {}
 
 // InitGenesis initializes the genesis state for this module and implements app module.
 func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, data json.RawMessage) []abci.ValidatorUpdate {
diff --git a/x/tron/module.go b/x/tron/module.go
index d66cbd645..e65487a8a 100644
--- a/x/tron/module.go
+++ b/x/tron/module.go
@@ -108,12 +108,7 @@ func (am AppModule) LegacyQuerierHandler(*codec.LegacyAmino) sdk.Querier {
 }
 
 // RegisterServices registers module services.
-func (am AppModule) RegisterServices(cfg module.Configurator) {
-	migrator := crosschainkeeper.NewMigrator(am.keeper.Keeper, am.legacySubspace)
-	if err := cfg.RegisterMigration(am.Name(), 3, migrator.Migrate3to4); err != nil {
-		panic(err)
-	}
-}
+func (am AppModule) RegisterServices(cfg module.Configurator) {}
 
 // InitGenesis initializes the genesis state for this module and implements app module.
 func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, data json.RawMessage) []abci.ValidatorUpdate {