I accidentally manually imported ALL TRANSACTIONS into a checking account that was already connected.

Now I literally have duplicated 1,500+ transactions, on accident, because I made a date range mistake when exporting from my bank.

I have read support articles here that say to go to the "For Review" tab, then manually identify the duplicate transactions, then Exclude.

This opens up a lot of potential for manual human error on my part (I just imported all transactions, do you think I'm the brightest guy?), and also would be very time consuming.

Please, whoever response to this question, just answer these two questions:

1. Is there a way to simply UNDO my last manual import of data?

2. Is it possible to remove my existing checking account and just re-add it without any negative consequences? In my case, I don't have any transactions categorized. It's simply an account with duplicate bank transactions at this point.