Years ago I had installed a pack of brushes to PS 2016 and deleted the file I installed from since I had a backup. I upgraded to the 2020 version and uninstalled the 2016 version, and the brushes were still fully available/usable in the new version, but now my backup of the file for the brushes is gone. I've tried searching my whole PC with the name of the brush folder/brushes and can't find any files relating to them. The 2016 version was installed on the main C drive, uninstalled, and the 2020 version was installed on the secondary D drive. Is there a way I can find the installed brush file(s) and extract it alone to re-save it to a backup?
My guess was here in the screenshot, and my additional, even less confident guess is that the Converted Legacy Tool Presets.abr file contains all the brushes from the 2016 version. Still, I just want to see if there is a way to extract just one pack of brushes.