As with the clause(s?) in the V3 EULA that caused a minor riot - and IIRC the Digital Clone EULA - that was modified YEARS ago, and no longer exists in the P5 EULA or the P6 EULA that can be found at:

http://www.e-frontier.com/article/articleview/1491/1/635?sbss=635/

which, to me at least, suggests that it surely cannot be a reason to not support exporting to Poser formats.

I'm also slightly surprised if a company that makes most of its sales from Poser-formatted files cannot, itself, reliably produce Poser-formatted files :?