Multicliffs with FT Editor

I tryed to have multicliffs in a new FT map by using the old method with zepir's editor.

But when I opened the map in WE it said the texture ids wouldn't be allowed and the tiles were not in the list.

Does multicliffing not work anymore with FT? (I have updated my CliffTypes.slk correctly)

Download TFTWE 1.0beta from my sig in order to use the extra cliffs properly.