Hello Kim cousins
If you have deleted a transaction that should not be included in the QuickBooks and your reconcile is now out because of the deletion.It would be a case of undoing the reconciliation.This feature is only available for an accountant user in the cog>reconcile>history by account>click on the>by action and there will be an undo.If you are not an accountant user you would need to ask your accountant to do this.
Emma