Skip inspection for partial lot for the same purchase order (if first lot is accepted)

Gurus,

We have a specific requirement:

We have partial deliveries from the vendor against the same purchase order. Now the requirement is - continue inspection of partial lots till any one lot is accepted, then skip the remaining lots.

  For example, if the first shipment from the vendor is accepted, we need to skip inspection for all the remaining deliveries against the same purchase order. However if the first delivery is rejected continue inspection for remaining partial deliveries till one is accepted - then skip the rest.

I know we can skip lots using dynamic modification rule. But can we do that w.r.t a purchase order? Is there any work around for that?

Thanks!

Snigdho