diff --git a/app/deprecation-workflow.js b/app/deprecation-workflow.js
index 5b46a359..0f8fdf12 100644
--- a/app/deprecation-workflow.js
+++ b/app/deprecation-workflow.js
@@ -2,8 +2,6 @@ import setupDeprecationWorkflow from 'ember-cli-deprecation-workflow';
 
 setupDeprecationWorkflow({
   workflow: [
-    { handler: 'silence', matchId: 'ember-simple-auth.initializer.setup-session-restoration' },
-    { handler: 'silence', matchId: 'ember-data:deprecate-non-strict-relationships' },
     { handler: 'silence', matchId: 'ember-data:deprecate-early-static' },
     { handler: 'silence', matchId: 'ensure-safe-component.string' },
     { handler: 'silence', matchId: 'routing.transition-methods' },
diff --git a/app/models/deposit.js b/app/models/deposit.js
index 2db3fd6f..a0fc767e 100644
--- a/app/models/deposit.js
+++ b/app/models/deposit.js
@@ -4,9 +4,9 @@ export default class DepositModel extends Model {
   @attr('string') depositStatusRef;
   @attr('string') depositStatus;
 
-  @belongsTo('repositoryCopy') repositoryCopy;
-  @belongsTo('submission') submission;
-  @belongsTo('repository') repository;
+  @belongsTo('repositoryCopy', { async: false, inverse: null }) repositoryCopy;
+  @belongsTo('submission', { async: false, inverse: null }) submission;
+  @belongsTo('repository', { async: false, inverse: null }) repository;
 }
 
 export const DepositStatus = {
diff --git a/app/models/file.js b/app/models/file.js
index 766434ac..e29179f1 100644
--- a/app/models/file.js
+++ b/app/models/file.js
@@ -8,7 +8,7 @@ export default class FileModel extends Model {
   @attr('string') uri;
   @attr('string') mimeType;
 
-  @belongsTo('submission') submission;
+  @belongsTo('submission', { async: false, inverse: null }) submission;
 
   // not represented on backend
   // @attr('string') _file;
diff --git a/app/models/funder.js b/app/models/funder.js
index 933f75d5..68fcddb9 100644
--- a/app/models/funder.js
+++ b/app/models/funder.js
@@ -5,5 +5,5 @@ export default class FunderModel extends Model {
   @attr('string') url;
   @attr('string') localKey;
 
-  @belongsTo('policy') policy;
+  @belongsTo('policy', { async: false, inverse: null }) policy;
 }
diff --git a/app/models/grant.js b/app/models/grant.js
index c116336f..b96cc3c0 100644
--- a/app/models/grant.js
+++ b/app/models/grant.js
@@ -12,8 +12,8 @@ export default class GrantModel extends Model {
   /** Date the grant ended */
   @attr('date') endDate;
 
-  @belongsTo('user') pi;
-  @hasMany('user') coPis;
-  @belongsTo('funder') primaryFunder;
-  @belongsTo('funder') directFunder;
+  @belongsTo('user', { async: false, inverse: null }) pi;
+  @hasMany('user', { async: false, inverse: null }) coPis;
+  @belongsTo('funder', { async: true, inverse: null }) primaryFunder;
+  @belongsTo('funder', { async: false, inverse: null }) directFunder;
 }
diff --git a/app/models/policy.js b/app/models/policy.js
index f1395489..34ceda44 100644
--- a/app/models/policy.js
+++ b/app/models/policy.js
@@ -5,7 +5,7 @@ export default class PolicyModel extends Model {
   @attr('string') description;
   @attr('string') policyUrl;
 
-  @hasMany('repository') repositories;
+  @hasMany('repository', { async: false, inverse: null }) repositories;
   @attr('string') institution;
 
   @attr('string') _type;
diff --git a/app/models/publication.js b/app/models/publication.js
index 1ab4ef58..2d0cd1fa 100644
--- a/app/models/publication.js
+++ b/app/models/publication.js
@@ -9,8 +9,7 @@ export default class PublicationModel extends Model {
   @attr('string') issue;
   @attr('string') pmid;
 
-  @belongsTo('journal', { autoSave: true }) journal;
-  // submissions: DS.hasMany('submission', { async: true })
+  @belongsTo('journal', { async: false, inverse: null, autoSave: true }) journal;
   get abstract() {
     return this.publicationAbstract;
   }
diff --git a/app/models/repository-copy.js b/app/models/repository-copy.js
index 220b0509..47eb76cf 100644
--- a/app/models/repository-copy.js
+++ b/app/models/repository-copy.js
@@ -5,8 +5,8 @@ export default class RepositoryCopyModel extends Model {
   @attr('string') accessUrl;
   @attr('string') copyStatus;
 
-  @belongsTo('publication') publication;
-  @belongsTo('repository') repository;
+  @belongsTo('publication', { async: false, inverse: null }) publication;
+  @belongsTo('repository', { async: false, inverse: null }) repository;
 }
 
 export const CopyStatus = {
diff --git a/app/models/submission-event.js b/app/models/submission-event.js
index d345266e..7620600a 100644
--- a/app/models/submission-event.js
+++ b/app/models/submission-event.js
@@ -7,8 +7,8 @@ export default class SubmissionEventModel extends Model {
   @attr('string') comment;
   @attr('string') link;
 
-  @belongsTo('submission') submission;
-  @belongsTo('user') performedBy;
+  @belongsTo('submission', { async: true, inverse: '_submissionEvents' }) submission;
+  @belongsTo('user', { async: false, inverse: null }) performedBy;
 }
 
 export const Type = {
diff --git a/app/models/submission.js b/app/models/submission.js
index 84d20d46..fd6c4a7c 100644
--- a/app/models/submission.js
+++ b/app/models/submission.js
@@ -20,15 +20,16 @@ export default class SubmissionModel extends Model {
   submitterEmail;
   @attr('number') version;
 
-  @belongsTo('user') submitter;
-  @belongsTo('publication') publication;
+  @belongsTo('user', { async: false, inverse: null }) submitter;
+  @belongsTo('publication', { async: false, inverse: null }) publication;
 
-  @hasMany('user') preparers;
-  @hasMany('repository') repositories;
-  @hasMany('policy') effectivePolicies;
+  @hasMany('user', { async: false, inverse: null }) preparers;
+  @hasMany('repository', { async: true, inverse: null }) repositories;
+  @hasMany('policy', { async: false, inverse: null }) effectivePolicies;
   // not on this model on API
   @hasMany('submissionEvent', {
     async: true,
+    inverse: 'submission',
   })
   _submissionEvents;
   /**
@@ -38,6 +39,7 @@ export default class SubmissionModel extends Model {
    */
   @hasMany('grant', {
     async: true,
+    inverse: null,
   })
   grants;