It would be nice to have different revisions for the PO after each release. We place lots of blanket orders that are release upon request. What we do right now, is enter the item with requested date to be 01/01/09. This is our indicator that this item is on a blanket. and everytime we contact our supplier to release a certain quantity, we have to physically go into the PO, create a new line with the correct quantity released and date and update the old line with the correct quantity remaining on the blanket.
Having the option to have different revisions of releases would help us a lot.
 
Is this easily implemented?

We need to control the quantity and dates of the releases. Its our way to let receiving know what to expect and when.(we do not receive over shipments) As well, its used by our purchasing to follow up with vendors for any delays. We have had a few issues where items on blanket have not been shipped promptly and it delayed production. As well we need to know expected receiving dates.
 
Dont you need to control the amount received? how does your receiver know the amount you released?