reloading chunks is not needed when resetting, fixing entities removed.

src/main/java/carpet/mixins/ServerWorld_scarpetMixin.java

@@ -13,6 +13,7 @@ import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.ChunkPos;
 import net.minecraft.util.profiler.Profiler;
 import net.minecraft.world.chunk.WorldChunk;
+import net.minecraft.world.entity.EntityLookup;
 import net.minecraft.world.explosion.Explosion;
 import net.minecraft.world.explosion.ExplosionBehavior;
 import net.minecraft.world.level.ServerWorldProperties;
@@ -79,7 +80,14 @@ public class ServerWorld_scarpetMixin implements ServerWorldInterface
     @Final
     @Shadow
     private ServerWorldProperties worldProperties;
+    @Shadow @Final private ServerEntityManager<Entity> entityManager;
+
     public ServerWorldProperties getWorldPropertiesCM(){
         return worldProperties;
     }
+
+    @Override
+    public EntityLookup<Entity> getEntityLookupCMPublic() {
+        return entityManager.getLookup();
+    }
 }

src/main/java/carpet/mixins/ThreadedAnvilChunkStorage_scarpetChunkCreationMixin.java

@@ -12,6 +12,10 @@ import java.util.concurrent.Future;
 import java.util.function.IntFunction;
 import java.util.stream.Collectors;
 
+import carpet.fakes.SimpleEntityLookupInterface;
+import carpet.fakes.ServerWorldInterface;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.ServerTask;
 import org.apache.commons.lang3.tuple.Pair;
@@ -358,11 +362,17 @@ public abstract class ThreadedAnvilChunkStorage_scarpetChunkCreationMixin implem
         {
             final ChunkPos pos = chunk.getPos();
 
+            // remove entities
+            long longPos = pos.toLong();
+            if (this.loadedChunks.contains(longPos) && chunk instanceof WorldChunk)
+                ((SimpleEntityLookupInterface<Entity>)((ServerWorldInterface)world).getEntityLookupCMPublic()).getChunkEntities(pos).forEach(entity -> { if (!(entity instanceof PlayerEntity)) entity.discard();});
+
+
             if (chunk instanceof WorldChunk)
                 ((WorldChunk) chunk).setLoadedToWorld(false);
 
             if (this.loadedChunks.remove(pos.toLong()) && chunk instanceof WorldChunk)
-                this.world.unloadEntities((WorldChunk) chunk);
+                this.world.unloadEntities((WorldChunk) chunk); // block entities only
 
             ((ServerLightingProviderInterface) this.serverLightingProvider).invokeUpdateChunkStatus(pos);
             ((ServerLightingProviderInterface) this.serverLightingProvider).removeLightData(chunk);