Reversing voided check is still unavailable in QuickBooks Online (QBO), info-sklover. As a workaround, you can consider recreating them using the audit log information. Let me share with you the specifics.
Once a check is voided, the action is irreversible. However, you can recreate the check if needed. To do so, access the audit log to provide you with the necessary details to recreate the voided check accurately.
To delete a check, here's how:
Go to the Expenses, click the dropdown arrow beside the All transactions.
Select Check to filter the transactions.
From there, choose the voided checks and hit the dropdown arrow under the Action column and click Delete.