It was sometimes used as a way to avoid potential Windows version update kill of
C:\Windows\System32\config\systemprofile\AppData\Local\Duplicati
There’s also a 2017 YouTube video suggesting using it for WindowsService install, which I’m pretty sure I’ve cited before, due to lack of better documentation or code.
Things do change, and old videos and forum topics get dated (but still get noticed).
This had me wondering about new secure DB folders + new SYSTEM DB location + downgrade, and I’m hoping it all works out. One 2019 forum posting has the usage:
so maybe it’s OK (likely SYSTEM), but if normal-user stuff can be there, it fails.