converted to QBO in Sept. -noticed mistake on old file from August ( had not caught before) of duplicate bill and payment on same day for state tax. How do I delete both old bill and old payment. Do not connect bank account- no reconciling issues.
You have no reconciliation issue, because you have had a duplicate banking expense that never cleared the bank. So, banking has the wrong details, and you would notice this when you Reconcile for your August or Sept statement, that this one entry still is Uncashed, as you reconcile to each statement. Not Connected, means you still should be reconciling to statements. Not Connected = You just have no early verification that the bank has processed something.
You don't need to Make a bill just to pay it for that same date. That is check expense.
You didn't tell us which type of State Tax this is. Payroll tax is never a Bill, first.
You can delete the bill and the check, which seems likely you never printed it and did not use an actual Paper Check # for this. But you might evaluate that this likely never was AP, either.
I have a similar situation, where a bill and payment were applied and an expense was also posted for the same bill, so my bank account shows the duplicate expense as an uncleared item. I could process a journal entry to offset the expense and bank, but the vendor history will still be incorrect with 2 bills and payments showing instead of 1. Since it's in a closed period I can't delete the bill and payment. Is there a way to process a vendor credit and apply it to the bank to reconcile?