I was curious if my Poser Pro 2012 install behaved the same. I'm not an active Poser Pro user, but have it installed just to test DAZ content in Poser . My Poser Pro 2012 is the 64bit, version 9.0.3.26149 (SR3.2). I have the current DSON Importer installed, which I guess is 1.2.0.12, but I don't recall how to check the version.

I loaded two Genesis MS Lycans and Scott 6 G2M for good measure. I applied a pose preset to one of the Lycan's and Scott 6 and on the other Lycan, used the mouse to move it's arms and right leg. I don't appear to have any posing deformation issues.