First I just want to say that I'm impressed with the timely manner of support by datafeedr staff to resolve issues and respond to customer needs, it's one of the best I've seen by a wordpress plugin owner, A+++.
Second, I just want to say when I used the function calls for a brand/merchant filter function above it included all brands and merchants and were not category specific. Instead I used the functions in this thread: /show...5993#post35993
I do however want to confirm the note above. If I have a main category, then two levels of sub-categories below it, will the aforementioned functions work on all three levels?