Marking shipments as 'Invoiced'

We've just converted from V4 to V8 (only 3 days ago), and need to mark
shipments that were inadvertantly invoiced as 'Misc Invoices' as
having been 'Invoiced'. Otherwise, the shipment will re-appear every
time we use the Get Shipments action from the AR Entry program.

Is there a way to set the 'Invoiced' flag directly? Or must we create
and post zero dollar invoices to let the system handle all the
background processing?