I'll help you keep the bank transactions while you disable the sync in QuickBooks Self-Employed, Footr.
While you won't see the transactions anymore once the bank connection is turned off, you can manually add sales income and expenses. Or import transactions using a CSV file.
I'm adding these articles depending and choose the method you want.
You can always go back to this thread for other QuickBooks concerns. I'm always around to help you. May you have a wonderful weekend!
