Sales Receipt

If a deposit was made to the wrong account, it is impossible to reconcile that account since that deposit will not exist on the bank statement. So unless you told QB to adjust it out, what happened is the question.

Any change to a reconciled entry means the whole recon has to be deleted and redone.

You need to find out what happened when you reconciled the account (how you or QB handled the erroneous entry), delete what happened, reassign the deposit the correct account, and then do the recon again (both accounts)

 If the bank accounts were properly reconciled each month then there must be equal postings that are in error. It had to be an errant assignment of sales when matching to your bank feed..

Reconciliation should never be completed when out of balance unless by mere pennies (and I will spend a day resolving 12 cents).

Your accountant user(s) can undo the past reconciliations for you so that you can edit the deposits or you can plunge in and edit the wrong transactions on both accounts, ignoring and accepting the warnings....and then run mini reconciliations to the same most recent recon date.