Yes, you'll have to undo a reconciliation so you'll be able to change the correct date way back July 2022, Sarenarn.

 The undo reconciliation is the simplest form of redoing a reconciliation since you'll only have to do it at once. However, as mentioned by @MirriamM, if you're using a different QuickBooks Online (QBO) version, you can manually reconcile each transactions to undo them. You can follow the detailed steps provided above. 

Once you've unreconciled them, start doing the changes with the correct date on the new account. Afterwards, you can reconcile them again. 

Additionally, QuickBooks generates a reconciliaiton report for each session. To view, print or export the report, go through this article for your guide: How Do I View, Print, Or Export A Reconciliation Report?

Ping me over if you need further assistance with reconciliation. I'll always be right here to help.