by kraada » Thu Sep 27, 2012 2:52 pm
PT4 is a totally different program and it uses a different database structure, so there is a conversion process. That said, we've included a conversion tool to make it a lot easier in terms of work - it should mostly be clicking next, but you will need to wait while your database is converted (which, depending on your database, can take quite a while).
PT4 does support Omaha - in fact it's even more integrated than it was in PT3. You can keep PT3 and PT4 installed side by side so if you're having any trouble with PT4 once it's installed that won't cause any problems for your PT3 setup.