by kraada » Sun Feb 21, 2010 9:42 am
What you'd want to do is install whatever the postgres version is for each data directory one at a time (start with the earliest version number so you don't lose track!). You can find the postgres version of the directory by opening the PG_VERSION file in notepad (it'll say something like 7.4, 8.0, 8.1, etc.). Install PostgreSQL using the pgInstaller to that directory while unchecking initialize database cluster (I'm not sure if it's called that in the 7.4 installer, it is in the 8.x installers). Once it's installed, link it up to PT3 Beta 30.7. Backup the database using File --> Backup. Uninstall PostgreSQL, install the next version. Rinse and repeat until you've backed up every database.
Then install the actual version of PostgreSQL you want, and restore all of the databases from backup. Then you'll have them all in PT3 in the same PostgreSQL version.