I dont monitor that system, but i did notice that K10, 11 and 12 say Major Incident / Mountain Rescue.
So im wondering if perhaps when they are on that talk group they are in an area with mountain coverage and on a different site. IF your far away and on a different site, and no one is affiliated with those talk groups near you, you wont hear the traffic. What site is your G5 affiliated with? Pretty much the same thing u/kb7mib is saying
If it was my unication device i would check to see what sites you have programmed in, if they have primary and alternate CC, are set properly with site designators, like 1-1, 1-2, 2-1 These are all important for the G4/5 to work properly. And since you programmed it with RR it might do good to double check stuff. I never imported from RR for my equipment, I always manually programmed them.