PokerTracker

I have an old PT2 database running on Suse that I'd like to keep

I found the guide but do not see the Database->Convert here in PT3 when installed on MAC?

Is this only supported under Windows, if so will it work if I just use a trial version then?

Thanks!

I assume that the Convert function was left out of the Mac version because there is no Mac version of PT2, so no Mac PT2 databases to convert.
You will probably find the easiest way to transfer your hands is by exporting from PT2 then importing to PT3 - Tutorial: Convert PT2 non PostgreSQL database to PT3.