Finished free trial are my stats saved ?

[Loomis]

I would now like to purchase it. If I just click buy now on the already installed free version I gather my stats will be saved, i'm wondering if I uninstall and then purchase will it still have the old stats from the free trial. I don't need the old stats thats all I was just playing around in different limits.
Also if I just plan to use it for NL25 but plan to move up in a few months to 50
or 100 should I just purchase the small stakes version and upgrade later or just purchase pro now.
Thanks.

[PCP Poker]

Your stats are safe even if you uninstall the program. They are stored in a Postgre SQL database totally separate from Holdem Manager.