I've discovered an oddity - I transferred a character that I like to use (the LoResGuy from one of the earlier Posers that isn't for some reason in the legacy contents of recent Poser versions) into PPro 2010's library structure - I transferred the CR2, the PNG, the OBJ, and a texture I made into appropriate locations, but when I use the PPro 2010 library to bring it in via drag-and-drop it enters the scene upside down, in default pose, and imbedded halfway thru the ground plane  However, if I use the highlight-and-double check to bring it in, it appears in my preferred pose rightside up and on the ground at the 0,0,0 coordinates.   If I try moving the upside-down version to the 0, 0 location and applying the pose, saving it into the library again, then importing that version via drag-and-drop, it imports all screwy again.  I haven't seen this using any other assets  I've tried in all the (limited time, about 5 or 6 hours total) experimenting with the Library that I've done.
Can't think why this is happening - has anyone else encountered this behavior?

I'm really guessing here. Drag and drop autoconforms a figure to whatever you drop it on if you drop it on a figure. If you have no figure under the mouse pointer, then it won't.

But, suppose you have one of those room props that's actually been set up as a figure, so the doors can open and close. If you drag a figure into the room, you're going to conform it to the room, no matter where you drop. Could that be the case? You're dropping on something you didn't realize is a figure?

And if it is a figure - who knows what will happen when the "bones" line up.

I tried it in a populated scene, and then in a fresh empty setup - same thing both ways.