It seems there is a ducking issue once again, I just noticed it today. When setting audio clips to their type, normally when you auto duck then it works just fine and creates the keyframes where it needs to be. With the latest update, this doesn't appear to be working.
The only way I was able to get it to work was to slide the Sensitivity slider about 3/4 of the way towards the 'high' end, and then it worked. I'll be submitted a bug report on this as well.
@bryanc31400415 Thanks for the report, we have already fixed this internally and the fix should ship with the next version of Premiere. You can see the fix already in the current Beta version of Premiere.