We adopted the the advanced invoice process for our CIA customers.
However >50% of the time, the original order is modified:
Quantity changes
Freight Changes or add freight cost
Pricing changes
It seems the only way to deal with this is to credit the advanced incoices, net them, and create a new advanced invoice. SO...we wait as long as possible to create the advanced invoice (after we finalize the amt), but we often get payments before the advanced invoice is created and pt them on account. Either it is a lot of work. Are there any creative ways to revise advanced invoices ? Or other ideas on how to deal with this ?