I just had the same issue this morning. When I downloaded the data from RR it populated my Systems tab, but the bulk of the records went to another local system with a different ID.
In the below instance, the records went to the 6F16 ID (i believe) but my control channel identified as 712D. So I just stopped the signal receiver, entered this tab, double clicked on the 6F16 and changed the ID to 712D.
Started signal receiver, worked fine. I don't know if the information is accurate, but it looks better.