Oh, that makes sense now.
Yes - tk2dTileMap is empty.
I am guessing that the equivalent in 1.9x folder structure is tk2d \ Editor \ TileMap and tk2d \ Code \ TileMap right?
So I can delete those, and re-import, and have the new 2.0 folder structure. Correct? (or delete them altogether, without re-importing, if not using them).