I had to add talk group 7539 to the scanner bank. Once I did that started hearing units again.
Go to the bank you had to add I-D 7539, and change the status bit setting. You currently have it set to pay attention to bit variations, and that will keep you from hearing some SCHP communications. Set it to "ignore" variations.
Check your other Motorola trunking banks, also, for the same. Otherwise, anytime a talkgroup is run in multi-select or patched mode via the dispatch console, you likely won't hear it.
All analog Motorola talkgroups on a 3600-baud system will have a talkgroup I-D ending in an even number, unless a setting is altering the status bit. If you see an I-D ending in an odd number while searching on a system, that should raise a red flag in your mind (unless you've already run across it before, and identified the base I-D).