Hello QuickBooks Online experts!

I need advice on how to remove uncleared/unreconciled transactions from last year from bank register in QB when books are closed and taxes are filed. It's not recommending delete them, especially when taxes filed. I know, that it should be done in the current year. These transactions usually are done by mistake or duplicates and affecting bank register balance in QB even if reconciliation for each month was closed properly. Would be happy to hear a few opinions and options.