OBJ exported with QFT issue with Unfold3D and RizomUV

[ForrestGimp]

-The OBJ exported with QFT when loaded into a UV unwrapping program (Unfold3D) the mesh is exploded the faces are all disconnected.
-The OBJ exported with QFT when loaded into a UV unwrapping program (RizomUV) it gives an error message "Input polygon mesh data has some topology error(s)".
-The OBJ exported with QFT when loaded into a painting program (Substance painter) you can't see anything in the view port, and a very slow performance in the program almost impossible to interact.
Video and screen shot and OBJ test model in zip file.
QFT-OBJ.zip