No matter what software you use, the concept is use a programming cable from the scanner with the info.
Both scanners should have come with one each.
Copy into the software, I would also save it onto the computer as well.
Be sure to change the startup screen as i.e. on startup the 325P2 could say 996P2 or vice-versa.
If it happens, won't effect how it works though.
Then upload it to the scanner that requires the new programming.
If especially all you want to do is that, then Freescan will suffice, it is indeed Free. The only thing is that it doesnt support DMR programming if you bought those addons from Uniden.
If you did or another inquires here, if someone purchased DMR programming for a scanner, it WONT transfer to the other scanner.
The other two software's mentioned do have 30 day free trials.
Freescan download info and some additional how-to videos at the bottom since your a premium subscriber.
wiki.radioreference.com
Additionally these radios had firmware updates from Uniden several weeks ago, so apply those too.
What they did-