Does ApprovalMax support a review and editing functionality for QuickBooks Online Bills?

Does ApprovalMax support a review and editing functionality for QuickBooks Online Bills?

Unfortunately, no. 
Bills can be modified exclusively by the person who created them (the Requester), and only up to the point of full approval. 

If any changes are applied during the approval workflow, the respective Bill will start going through the approval workflow anew, with previous approvals reset.