So, you are saying to remove the tsts as devices. Then, unhook the AC wires and take them off the wall. Then take them over to the panel and re add them as device. Then re-install them to the AC wires on the wall???
Bring the panel to the TSTAT. The TSTATs have to be learned in while connected to the C-Wire to act as repeaters.
The TSTATS are being removed from the Z-Wave network and re-added. You wouldn’t need to physically move the TSTAT. The panel can add/remove Z-wave devices while on battery power.
Just wanted to leave you a message as to how the issue ended. The problem turned out to be in the schedules. Assigning the senors on the tsts as show earlier in this thread does not affect the schedules, which were still set to the tsts themselves. It was necessary to go into the schedules and assign each of the Home, Away and Sleep modes, in both cool and heat schedules, for each tst. Now, they are holding. I presume that, previously, the sensor would simply change to the designation in the schedule every time the schedule took control. Appears to be working fine now.
That’s great to hear, always better than a physical issue. Let us know if they fall off again but it sounds like you fixed it.