diff --git a/Robust.Shared/GameObjects/Systems/SharedGridFixtureSystem.cs b/Robust.Shared/GameObjects/Systems/SharedGridFixtureSystem.cs
index 79538fb09..fb37a4256 100644
--- a/Robust.Shared/GameObjects/Systems/SharedGridFixtureSystem.cs
+++ b/Robust.Shared/GameObjects/Systems/SharedGridFixtureSystem.cs
@@ -100,37 +100,6 @@ namespace Robust.Shared.GameObjects
             CheckSplit(gridEuid, mapChunks, removedChunks);
         }
 
-        internal void RegenerateCollision(EntityUid gridEuid, MapChunk chunk, List<Box2i> rectangles)
-        {
-            if (!_enabled) return;
-
-            if (chunk.FilledTiles == 0)
-            {
-                CheckSplit(gridEuid, chunk, rectangles);
-                return;
-            }
-
-            if (!EntityManager.TryGetComponent(gridEuid, out PhysicsComponent? physicsComponent))
-            {
-                Sawmill.Error($"Trying to regenerate collision for {gridEuid} that doesn't have {nameof(physicsComponent)}");
-                return;
-            }
-
-            if (!EntityManager.TryGetComponent(gridEuid, out FixturesComponent? fixturesComponent))
-            {
-                Sawmill.Error($"Trying to regenerate collision for {gridEuid} that doesn't have {nameof(fixturesComponent)}");
-                return;
-            }
-
-            if (UpdateFixture(chunk, rectangles, physicsComponent, fixturesComponent))
-            {
-                _fixtures.FixtureUpdate(fixturesComponent, physicsComponent);
-                EntityManager.EventBus.RaiseLocalEvent(gridEuid,new GridFixtureChangeEvent {NewFixtures = chunk.Fixtures}, true);
-
-                CheckSplit(gridEuid, chunk, rectangles);
-            }
-        }
-
         internal virtual void CheckSplit(EntityUid gridEuid, Dictionary<MapChunk, List<Box2i>> mapChunks,
             List<MapChunk> removedChunks) {}
 
diff --git a/Robust.Shared/GameObjects/Systems/SharedMapSystem.Grid.cs b/Robust.Shared/GameObjects/Systems/SharedMapSystem.Grid.cs
index d51f509db..ab6937371 100644
--- a/Robust.Shared/GameObjects/Systems/SharedMapSystem.Grid.cs
+++ b/Robust.Shared/GameObjects/Systems/SharedMapSystem.Grid.cs
@@ -53,6 +53,16 @@ public abstract partial class SharedMapSystem
                 _transform.SetParent(xform, MapManager.GetMapEntityIdOrThrow(mapId), xformQuery);
         }
 
+        // Force networkedmapmanager to send it due to non-ECS legacy code.
+        var curTick = _timing.CurTick;
+
+        foreach (var chunk in component.Chunks.Values)
+        {
+            chunk.LastTileModifiedTick = curTick;
+        }
+
+        component.LastTileModifiedTick = curTick;
+
         // Just in case.
         _transform.SetGridId(xform, uid, xformQuery);
 
diff --git a/Robust.Shared/GameObjects/Systems/SharedMapSystem.cs b/Robust.Shared/GameObjects/Systems/SharedMapSystem.cs
index b9c0d91c0..7fb3b2e90 100644
--- a/Robust.Shared/GameObjects/Systems/SharedMapSystem.cs
+++ b/Robust.Shared/GameObjects/Systems/SharedMapSystem.cs
@@ -6,12 +6,14 @@ using System.Collections.Generic;
 using Robust.Shared.GameStates;
 using Robust.Shared.Map.Components;
 using System.Linq;
+using Robust.Shared.Timing;
 
 namespace Robust.Shared.GameObjects
 {
     [UsedImplicitly]
     public abstract partial class SharedMapSystem : EntitySystem
     {
+        [Dependency] private readonly IGameTiming _timing = default!;
         [Dependency] protected readonly IMapManager MapManager = default!;
         [Dependency] private readonly SharedTransformSystem _transform = default!;