diff --git a/src/main/java/com/nomiceu/nomilabs/remap/datafixer/storage/BlockStateLike.java b/src/main/java/com/nomiceu/nomilabs/remap/datafixer/storage/BlockStateLike.java
index 462f1df7..7a86eecf 100644
--- a/src/main/java/com/nomiceu/nomilabs/remap/datafixer/storage/BlockStateLike.java
+++ b/src/main/java/com/nomiceu/nomilabs/remap/datafixer/storage/BlockStateLike.java
@@ -3,6 +3,7 @@
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
+import com.nomiceu.nomilabs.NomiLabs;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.BlockPos;
@@ -65,7 +66,14 @@ public int getOldId() {
     }
 
     public int getId() {
-        return rl == null ? -1 : DataFixerHandler.getBlockToIdMap().getOrDefault(rl, 0);
+        // Return oldId as a fallback, so that if the rl is not registered, we can still let remappers remap it
+        if (rl == null || !DataFixerHandler.getBlockToIdMap().containsKey(rl)) {
+            NomiLabs.LOGGER.debug("[Data Fixer] Block at Pos {} has Resource Location {}, which is not registered.", rl, pos);
+            NomiLabs.LOGGER.debug("[Data Fixer] Most likely, this indicates removed blocks. If the Resource Location is null, report this to Nomi-CEu/Nomi-Labs Devs.");
+            return oldId;
+        }
+        // Still use getOrDefault, just in case
+        return DataFixerHandler.getBlockToIdMap().getOrDefault(rl, oldId);
     }
 
     public BlockStateLike copy() {