remember TopMod : http://www.viz.tamu.edu/faculty/ergun/research/topology/download.html

"Bridge" & "Bevel" & Radial menus excellent!
Show Red faces with problem !


Export easy! And import inside Sketchup with free Quad Faces tool by Thomthom


And no problem for input inside Moi with _importObj then Subdiv both by Max Smirnov!