Hmm...Having just upgraded from P3Dv2.5 to P3dv3.4, I recently download 13 ORBX payware regions and airports, all queued up in just an hour or so.. Ran like a top and was so much easier than the old method. I also created backup copies at the same time. Obviously it is working well for me. Of course, I waited till all the smoke had cleared. I just transferred licenses and went to FTX Central 3.0 in the last 3 of 4 weeks. Too bad it took them till FTX Central 3.1.2 to get most of the bugs worked out.
Rod