Hello @steelslicer
Thank you for reaching out on the community and telling us about your issue. When it comes to the downloaded categories you should be able to change them by going to Tools -> Memorized payee list. From here you'll be able to see all your payees and see them all listed. Once you find the one you're looking for you can right click and select edit so you're able to change the category to the one you want each time.
Here's also an article regarding memorized payees if you might have a couple of extra questions.
Please let us know if this helps resolve the issue for you.
Thanks,
Quicken Francisco