There is nothing special about upgrading from PSE14 to PSE2021.
When you install PSE2021, it's installed distinctly from PSE14 which you can keep if you want, they are independent softwares. As usual, during the installation of PSE2021 you are prompted to convert your current catalog to the new format. That means the PSE14 catalog is unchanged apart from its name which gets a -1 suffix; it's still available with PSE14. Its contents are translated into a new catalog of the PSE2021 database format.
Regular PSE users know that to avoid any risk during installation, it's smart to install the trial version first (it's fully similar for 30 days). When you are happy, you purchase the license and only enter the code without reinstalling the software. The installation process is faster now, but look at the system requirements (8 GB RAM mininum to support the new automatic IA features).
You get help in the present forum or in the dedicated one:
To get help (by chat) from Adobe directly may be somewhat slower on account of the pandemy...
Warning: you don't IMPORT the database if you install the new version in the same computer, you CONVERT the databases in the catalog folder into a new catalog, without changing or importing any media file.
When I upgraded from PSE AE7 (I think it was 7) to AE14 PSE 14, the database would not convert. I had to create it from the embedded tags in my photos. I'm thinking about upgrading computers and I wanted to get one conversion out of the way. I may wait until i get the new PC if it's really that easy.
Finally, is this a single purchase install?
Thanks for all the help!!!
[Edited by moderator. AE = After Effects. PSE = Photoshop Elements.]