Inventory Mgmt - Change to Bin Use PROBLEMS

We have just changed over to using bin locations for our inventory items effective with our year-end physical inventory postings.  Prior to switching to Bin Use, we were able to process transactions that would result in a negative inventory count (Example:  An item may be shipped upon the physical receipt of goods prior to recording the receipt on the system).  We are unable to process transactions that would result in a negative inventory count (temporarily) since assigning bins to the inventory items.  We are not even able to change order status' when this situation occurs. 

This situation is causing an interuption in our business as it stands now.  In the absence of any reply from Customer Support, does anyone have a solution that will allow negative items counts in bin locations?