PS 2025 still runs on Win 10.  Its the automatic windows security updates that are no longer available, so it puts you at a security risk.  I signed up for another year of free win 10 updates on my home system...at any rate you want to move your proseries files from one computer to the other.

Install the programs on the new computer, Start with the oldest year first.

Once youve got them installed, go back to the old computer, change Homebase to ALL FILES,  Highlight them all, click File > Client File Maintenance and choose Copy/Backup.  Back them up to a flashdrive.

Now take the flashdrive to the new computer and do the same thing, File > Client File Maintenance and choose RESTORE, point to the flashdrive and restore them to the new computer.

You may need to run Homebase Maintenance to sync everything up.