Item commitment

So here's our issue:

Let's say we put in an order for 200 of part x. We set a future ship date of a few months in advance. Unfortunately, the system automatically commits 200 of part x to our order. Assuming inventory of part x is 200 or below, any new orders will not be able to ship because they don't have any ATS to commit. We'll be getting more shipments of part x as time goes on, so we'd like to ship current orders.

Sooo, my question is: is there a way to 'uncommit' these parts from this order? I know we can manually reallocate, but this is time consuming as it would require daily attention, several times a day. I'd like to have the order saved in the system, and manually reallocate when I am ready. I know we could have made an Estimate, and then transferred to a sales order, but we are trying to avoid that for reporting purposes.