@gwp1 : Yes, I've seen (100s!) of those, no problem there! 😉
I just had this notion that there was some other function in place, where if a device was gone, it would prompt you "This entity is gone, select replacement here", and that this would do replacement of all uses of that entity/device.
To the other discussion:
My problems started when I moved ALL devices to a new system, as in all entity addresses changed.
I have previously been on the same MSR version for long periods of time without any issues, so I very much doubt any "planned obsolesence". 😉