Move block ids over even if there isn't an AddBlocks tag in schematics

src/main/java/com/sk89q/worldedit/schematic/MCEditSchematicFormat.java

@@ -119,6 +119,10 @@ public CuboidClipboard load(File file) throws IOException, DataException {
                     blocks[index] = (short) (((addBlockIds[i] << 4) & 0xF) << 8 + rawBlocks[index++]);
                 }
             }
+        } else {
+            for (int i = 0; i < rawBlocks.length; ++i) {
+                blocks[i] = rawBlocks[i];
+            }
         }
 
         // Need to pull out tile entities