Hello @tallshipsmedia,
We would like to apologize for the delay in replying to you.
You can simply activate the to pro version following the similar process that you have done to activate the free version. The database that you already have will not be lost upon shifting to the pro version.
So simply download the pro file and activate it as like the free one.
Hope this helps.
Let us know if you have any confusion further.
Thank you.
Regards!!