All C7's have an "Auto Learn" procedure associated with the TPMS. It's designed specifically for tire rotation and replacement.
From the 2019 GS Owner's Manual:
"TPMS Sensor Matching Process — Auto Learn Function. Each TPMS sensor has a unique identification code. The identification code needs to be matched to a new tire/wheel position after rotating the tires or replacing one or more of the TPMS sensors. When a tire is installed, the vehicle must be stationary for about 20 minutes before the system recalculates. The following relearn process takes up to 10 minutes, driving at a minimum speed of 19 km/h (12 mph). A dash (-) or pressure value will display in the DIC. See Driver Information Center (DIC) 0 121. A warning message displays in the DIC if a problem occurs during the relearn process."
I rotate my wheels each spring and follow this procedure. Never had a problem in 4 years of ownership.
Hope this helps
Ross