There is no aggregation of the 3 partnerships (LLCs). Each files its own return with no reference to the others.

On the MFJ return, there is the new form 8995. I decided, after trying to explain the problem a second time, that this might be the key for me. I have deleted the incorrect Form 8995 from the 1040. This allowed me to delete the Schedules that were aggregating the partnership K-1s incorrectly.

I also looked up the instructions for Form 8995. (What a concept! Read the instructions!)

I will try again.