It’s hard to get techies to see that, plan for the lease savy user.

Yeah I turned it off, the Nas only receives and keeps previous versions and the phone only sends. For my other shares it’s different.

I’ve been syncing big files to Nas them deleting them from my phone

I know it’s not the same but I’ve been using syncthing on a Nas to sync files. Don’t really have a tool for file transfers though.

As a man of science I prefer to test every theory.