The beginning balance in QuickBooks Desktop is different from my bank statement; they do not match, and I am unable to complete my reconciliation.

I have identified a discrepancy in the beginning balance in quickbooks, it doesn't match with my beginning balance in the bank statement, while performing my reconciliation for November 2024. This seemed unusual to me because when I completed my reconciliation for October 2024, everything was properly reconciled.  Upon review, I found that the discrepancy amounts to $2,041.18. After generating a "Previous Reconciliation Discrepancy" report, I discovered that my supervisor had deleted vendor payments from the years 2019, 2020, 2022, and 2023, which match this exact amount. These payments had already been reconciled.

My supervisor has instructed me to make the necessary adjustments to complete the reconciliation. However, I have never performed this type of adjustment before, and I am unsure how to proceed.  I know that one way to correct this is to undo the reconciliations and redo them from those years, but it would take me a considerable amount of time to undo reconciliations dating back to 2019.

Could you please assist me in ensuring the records are balanced so that I can finalize my reconciliation?  Could you please assist me in resolving this issue? I am currently using QuickBooks Desktop 2021.

I appreciate your help in advance.