Hello @dinobi-detergent,
You can transfer and select a new account depending on your transaction. If it's still under the For Review tab in the Banking page, you can select a new account under CATEGORY. But if the transaction is already in the register, you can delete and recreate it so you can assign a new account.
In addition, I'd recommend contacting your accountant for advice and additional assistance handling your accounts.
Lastly, here's a few articles you can read for ideas about how you can manage your accounts: Reports and Accounting for QuickBooks Online.
If there's anything else that I can help you with, let me know in the comments down below. I'll be happy to help.
