|To join many sales orders, use the navigation panel to go to Customer/Maintenance/Join/Join many.
When ‘many’ sales orders are joined, the orders are moved from the “Copy from” account to the “Copy to” account.
Use the ‘Filter’ button in the toolbar/ribbon to create a ‘Filter’ that will find the sales orders that are to be joined.
Click the ‘Join’ button in the toolbar/ribbon.
(Click on the screenshot to enlarge).