X1 Unpairing

​​When I've turned on my TV in the morning in the last two months, there's a screen around once a week on my XG1v4 asking me to connect my X15 remote.  I have to enter the code to unpair, then go through the process of naming my DVR, pairing the remote,  and adding controls for the TV and AVR.  Such a pain.​​

​​I've had an XG1v4 for several years.  We got a second one for a new 4K TV in January and in the process of trouble shooting some issues, I swapped the DVRs, so the old box is with the new TV.  That's the one I am posting about - the box we had for a long time with no problems.  The new box is running fine in the other room with the old TV.   ​​

​​Any idea why this is happening with some regularity after the set has been off overnight?​​