Is it really necessary to uninstall it? Installing from the APK will update the app and overwrite the current install, unless I am mistaken.
Yea. I'm not entirely sure on this. I've seen weird things where an app installed by FDroid, can't seem to update Aurora store apps, and vice versa. Maybe "they" fixed this.? But I found the most reliable path is having a specific installer remain in-charge of the apps it installed.