--- ../src-base/minecraft/net/minecraft/world/storage/SaveHandler.java
+++ ../src-work/minecraft/net/minecraft/world/storage/SaveHandler.java
@@ -127,8 +127,9 @@
             }
         }
 
+        net.minecraftforge.fml.common.FMLCommonHandler.instance().confirmBackupLevelDatUse(this);
         file1 = new File(this.field_75770_b, "level.dat_old");
         return file1.exists() ? SaveFormatOld.func_186353_a(file1, this.field_186341_a) : null;
     }
 
     public void func_75755_a(WorldInfo p_75755_1_, @Nullable NBTTagCompound p_75755_2_)
@@ -137,6 +138,8 @@
         NBTTagCompound nbttagcompound1 = new NBTTagCompound();
         nbttagcompound1.func_74782_a("Data", nbttagcompound);
 
+        net.minecraftforge.fml.common.FMLCommonHandler.instance().handleWorldDataSave(this, p_75755_1_, nbttagcompound1);
+
         try
         {
             File file1 = new File(this.field_75770_b, "level.dat_new");