Genesis 3 compatibility matrix.
in The Commons
I've done a forum search using several ways to search for this, and leafed through the forums and read the "Genesis 3" ad that tells how great G3 is.
I haven't seen anything to say if G3 poses or anything else, can be used with earlier generation figures. I think it's out there, I just can't find it without leafing through every forum page there is.
Is there a compatibility matrix for G3?
Is there a simple "NO, WE MADE G3 SO DIFFERENT YOU HAVE TO BUY ALL HAIR, CLOTHING, POSES AND EVERYTHING ELSE ENTIRELY SEPARATELY WITH NO FUNCTIONAL OVERLAP, HA HA HA HA HA HA HA HA HA HA HA HA (gasp)!
Thanks for letting us know.

Comments
According to the back and forth in other posts G3 poses are not backwards compatible due to all the extra bones it has. No one has as of yet found a way to do a conversion that removes those extra bendy spots.
Almost all of the compaibilty utilities have been to bring older gerneations forward to G3.
For backwards G3 clothes & hairs can be used on G2 with:
http://www.daz3d.com/genesis-3-male-for-genesis-2-male-s
http://www.daz3d.com/genesis-3-female-for-genesis-2-female-s
Thanks