Sure thing. I’ve done 2 updates to PathPilot since modifying the fstab entries and my network mount has persisted through both. That doesn’t mean it won’t continue forever but so far, so good. I’ll keep my notes handy if a future update wipes them out.
I agree, having things in one central location is a great way to do it. I also have my NAS sync that same folder with my OneDrive account so that I can post files to it anywhere in the world and OneDrive and NAS do their thing so that next time I turn the mill on, the files are readily available.