I had already tried everything you suggest (thank you) and spent many disappointing chats and calls to support. My issue remains as before. 

To be clear, my problem: There is no way to change the "renaming" logic on downloaded transactions. For example, if I download a McDonalds transaction and QB matches it to Office Supplies, it will remain that way, forever. I must manually change every McDonalds entry, manually.

Of course McDonalds is an example. The problem occurs with many vendors and transactions. 

Thank you for checking in.