Thanks for reaching out to us, sidebrake.
I've got the information you'll need on how to transfer QuickBooks Desktop Pro 2012 data to Desktop Premier 2020. Once you've installed the Desktop Premier 2020, you'll need to restore a backup copy of your company file from 2012 to the 2020 program.
Here are a few articles about Desktop 2020 if you need more details with the process:
I'll be right here if there's anything else I can do to help.
