Made a scene with genesis1 and a mertail.  Merged a previous scene that had genesis and a mertail, call them genesis2 and mertail2.

Loaded Reality, copied w/textures from genesis2 onto genesis1m, while in realirty material editor.  Went back into scene and hid genesis2 and mertail2.  Loaded reality and genesis1 was all null.

It might of been, when I hid genesis2 in the scene, it did not export to reality.