Yes.....I get those......Imported with Proscan is not the same as reading the scanner as some think.
The favorites lists need to be created by using Proscan to connect to the Radio Reference database, selecting the system, and importing it that way.
When imported correctly, RRDB Differences will appear next to the system like shown here.
View attachment 186152
I was just wondering today how to check for updates so I could check the above like I've done before....but before I just happened upon it and today I was wonder how to have ProScan check RR for differences......