If your QuickBooks Online Organisation was previously connected to an ApprovalMax Organisation, and you now want to reconnect that QuickBooks Online Organisation to a newly created ApprovalMax Organisation, you'll need to:
Disconnect the initially connected ApprovalMax Organisation from the QuickBooks Online Organisation
Retire or delete this ApprovalMax Organisation
Create a new ApprovalMax Organisation and then connect it to your QuickBooks Online Organisation
Please note: Due to OAuth 2.0 restrictions, it's not possible to reconnect a previously connected QuickBooks Online Organisation to a new ApprovalMax Organisation without removing the previous integration first.