Hello dstjean1!

If you got a new account, we're unable to transfer your past reconciliations to it. You can leave it to your prior account. Then, you can start a new one and record your opening balance to it, so you'll be good on your next reconciliation.

You can always visit us back here when you have questions in the future.

Have a nice day!

You don't need to make a New Bank in QB. Edit it and Disable the online banking, if that is what changed, and set it up fresh.