Did you turn off two way sync? I thought deleting data from your phone would make the system to interpret the change as an update and delete the data from your Nas too.

I remember reading this - IIRC the kingdom had an independant archivists division that was not under the control of the king, for the sole reason that kings would try to fit the narrative to their benefit.

Doesn’t the IP address change anyway?

But what about when you want to move a few gigs out of your phone to free up space?