diff --git a/Content.Server/Stories/Conversion/ConversionSystem.API.cs b/Content.Server/Stories/Conversion/ConversionSystem.API.cs
index ec5463da4b..fc9d6a3ffb 100644
--- a/Content.Server/Stories/Conversion/ConversionSystem.API.cs
+++ b/Content.Server/Stories/Conversion/ConversionSystem.API.cs
@@ -26,15 +26,14 @@ public HashSet<EntityUid> GetEntitiesConvertedBy(EntityUid? uid, ProtoId<Convers
 
         return entities;
     }
-    public bool TryGetConversion(EntityUid uid, [NotNullWhen(true)] out ConversionData? data, ProtoId<ConversionPrototype> prototype, ConversionableComponent? component = null)
+    public bool TryGetConversion(EntityUid uid, string id, [NotNullWhen(true)] out ConversionData? conversion, ConversionableComponent? component = null)
     {
-        if (Resolve(uid, ref component) && component.ActiveConversions.TryGetValue(prototype.Id, out var conversion))
-        {
-            data = conversion;
-            return true;
-        }
-        data = null;
-        return false;
+        conversion = null;
+
+        if (!Resolve(uid, ref component))
+            return false;
+
+        return component.ActiveConversions.TryGetValue(id, out conversion);
     }
     public bool TryRevert(EntityUid target, ProtoId<ConversionPrototype> prototype, EntityUid? performer = null, ConversionableComponent? component = null)
     {
@@ -47,10 +46,10 @@ public bool TryRevert(EntityUid target, ProtoId<ConversionPrototype> prototype,
         if (!CanRevert(target, prototype, performer, component))
             return false;
 
-        Revert(target, proto, performer, component);
+        DoRevert(target, proto, performer, component);
         return true;
     }
-    public void Revert(EntityUid target, ConversionPrototype proto, EntityUid? performer = null, ConversionableComponent? component = null)
+    private void DoRevert(EntityUid target, ConversionPrototype proto, EntityUid? performer = null, ConversionableComponent? component = null)
     {
         if (!Resolve(target, ref component))
             return;
@@ -61,6 +60,10 @@ public void Revert(EntityUid target, ConversionPrototype proto, EntityUid? perfo
         if (!_mind.TryGetMind(target, out var mindId, out var mind))
             return;
 
+        // До удаления компонентов, чтобы эти компоненты могли его обработать.
+        var ev = new RevertedEvent(target, performer, data);
+        RaiseLocalEvent(target, (object) ev, true);
+
         if (proto.EndBriefing != null)
             _antag.SendBriefing(target, Loc.GetString(proto.EndBriefing.Value.Text ?? ""), proto.EndBriefing.Value.Color, proto.EndBriefing.Value.Sound);
 
@@ -76,8 +79,6 @@ public void Revert(EntityUid target, ConversionPrototype proto, EntityUid? perfo
 
         component.ActiveConversions.Remove(proto.ID);
 
-        var ev = new RevertedEvent(target, performer, proto);
-        RaiseLocalEvent(target, (object)ev, true);
         Dirty(target, component);
     }
     public bool TryConvert(EntityUid target, ProtoId<ConversionPrototype> prototype, EntityUid? performer = null, ConversionableComponent? component = null)
@@ -85,22 +86,16 @@ public bool TryConvert(EntityUid target, ProtoId<ConversionPrototype> prototype,
         if (!Resolve(target, ref component, false))
             return false;
 
-        Logger.Error("1");
-
         if (!_prototype.TryIndex(prototype, out var proto))
             return false;
 
-        Logger.Error("2");
-
         if (!CanConvert(target, prototype, performer, component))
             return false;
 
-        Logger.Error("3");
-
-        Convert(target, proto, performer, component);
+        DoConvert(target, proto, performer, component);
         return true;
     }
-    public void Convert(EntityUid target, ConversionPrototype proto, EntityUid? performer = null, ConversionableComponent? component = null)
+    private void DoConvert(EntityUid target, ConversionPrototype proto, EntityUid? performer = null, ConversionableComponent? component = null)
     {
         if (!Resolve(target, ref component))
             return;
@@ -132,7 +127,7 @@ public void Convert(EntityUid target, ConversionPrototype proto, EntityUid? perf
         component.ActiveConversions.Add(proto.ID, conversion);
 
         var ev = new ConvertedEvent(target, performer, conversion);
-        RaiseLocalEvent(target, (object)ev, true);
+        RaiseLocalEvent(target, (object) ev, true);
         Dirty(target, component);
     }
     public void MindRemoveRoles(EntityUid mindId, ComponentRegistry components, MindComponent? mind = null, bool silent = false)
diff --git a/Content.Server/Stories/Conversion/ConversionSystem.MindShield.cs b/Content.Server/Stories/Conversion/ConversionSystem.MindShield.cs
index 3a6e3357f6..4ce56934ae 100644
--- a/Content.Server/Stories/Conversion/ConversionSystem.MindShield.cs
+++ b/Content.Server/Stories/Conversion/ConversionSystem.MindShield.cs
@@ -21,7 +21,7 @@ private void OnImplanted(EntityUid uid, ConversionableComponent component, MindS
     {
         foreach (var (key, conversion) in component.ActiveConversions)
         {
-            Revert(uid, _prototype.Index(conversion.Prototype));
+            DoRevert(uid, _prototype.Index(conversion.Prototype));
         }
     }
 }
diff --git a/Content.Server/Stories/Conversion/ConversionSystem.cs b/Content.Server/Stories/Conversion/ConversionSystem.cs
index 03f43b5543..93de6c8fdb 100644
--- a/Content.Server/Stories/Conversion/ConversionSystem.cs
+++ b/Content.Server/Stories/Conversion/ConversionSystem.cs
@@ -30,10 +30,12 @@ public override void Update(float frameTime)
         {
             foreach (var (key, conversion) in comp.ActiveConversions)
             {
+                if (conversion.EndTime == null)
+                    continue;
                 if (conversion.EndTime > _timing.CurTime)
                     continue;
                 var proto = _prototype.Index(conversion.Prototype);
-                Revert(uid, proto);
+                DoRevert(uid, proto);
             }
         }
     }
diff --git a/Content.Shared/Stories/Conversion/ConversionPrototype.cs b/Content.Shared/Stories/Conversion/ConversionPrototype.cs
index 3c71bd1ba5..593678adbc 100644
--- a/Content.Shared/Stories/Conversion/ConversionPrototype.cs
+++ b/Content.Shared/Stories/Conversion/ConversionPrototype.cs
@@ -1,3 +1,4 @@
+using Content.Shared.Mobs;
 using Content.Shared.StatusIcon;
 using Content.Shared.Whitelist;
 using Robust.Shared.Audio;
@@ -32,6 +33,9 @@ public sealed partial class ConversionPrototype : IPrototype
     #endregion
 
     #region Whitelist
+    [DataField]
+    public HashSet<MobState>? AllowedMobStates = [MobState.Alive];
+
     [DataField]
     public EntityWhitelist? Whitelist;
 
diff --git a/Content.Shared/Stories/Conversion/ConversionSystem.cs b/Content.Shared/Stories/Conversion/ConversionSystem.cs
index 75f697bf7b..45207e6be8 100644
--- a/Content.Shared/Stories/Conversion/ConversionSystem.cs
+++ b/Content.Shared/Stories/Conversion/ConversionSystem.cs
@@ -1,3 +1,4 @@
+using Content.Shared.Mobs.Components;
 using Content.Shared.Whitelist;
 using Robust.Shared.Prototypes;
 
@@ -26,6 +27,11 @@ public bool CanConvert(EntityUid target, ProtoId<ConversionPrototype> prototype,
 
         var proto = _prototype.Index(prototype);
 
+        if (TryComp<MobStateComponent>(target, out var mobState) &&
+            proto.AllowedMobStates != null &&
+            !proto.AllowedMobStates.Contains(mobState.CurrentState))
+            return false;
+
         if (_entityWhitelist.IsWhitelistFail(proto.Whitelist, target))
             return false;
 
diff --git a/Content.Shared/Stories/Conversion/ConversionableComponent.cs b/Content.Shared/Stories/Conversion/ConversionableComponent.cs
index f20e0d5785..6dec3b87a0 100644
--- a/Content.Shared/Stories/Conversion/ConversionableComponent.cs
+++ b/Content.Shared/Stories/Conversion/ConversionableComponent.cs
@@ -31,9 +31,9 @@ public sealed class ConvertedEvent(EntityUid target, EntityUid? performer, Conve
     public readonly EntityUid? Performer = performer;
     public readonly ConversionData Data = data;
 }
-public sealed class RevertedEvent(EntityUid target, EntityUid? performer, ConversionPrototype prototype) : HandledEntityEventArgs
+public sealed class RevertedEvent(EntityUid target, EntityUid? performer, ConversionData data) : HandledEntityEventArgs
 {
     public readonly EntityUid Target = target;
     public readonly EntityUid? Performer = performer;
-    public readonly ConversionPrototype Prototype = prototype;
+    public readonly ConversionData Data = data;
 }