Can I match an April bank transaction to a March expense that was already reconciled in a closed period, without affecting the March reconciliation?

Since the expense is already reconciled, it has already been accounted for and balanced against your past statement. QuickBooks Online automatically hides these entries to prevent accidental duplication, so the easiest move is to exclude the downloaded transaction.

1. Go to All apps, then Accounting.
2. On the Bank transactions page, select the Pending tab.
3. Tick the box of the transaction, then click Exclude.
   
   

If you prefer to link them, you can temporarily unreconcile the expense. Then, match and lock it back down. This ensures your previous opening and closing balances stay exactly as they were. Since the date isn't being altered, your historical reports and lodged BAS remain untouched.

1. Go to the Chart of Accounts and select View Register.
2. Find the expense transaction marked with an"R", click it, and change the status to blank by clicking the field.
3. Hit Save.
4. Match the transactions in the bank feed.
5. Go back to the register, then change the status back to "R".
   
   

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