Good evening, @retromushroomllc.
Welcome to the Community! We'd love to help you decide either to delete the transactions in your QB account or start a new one.
It ultimately comes down to how many transactions you already have in your QuickBooks account and what types of transactions they are. Do you mind providing us with some other details like what kind of transactions and how much many there is within this QB account?
I'll be waiting for your response!