The cause is still being investigated, but one important bit of information is that it appears to be happening during the following (incorrect) workflow....
- Order checked in
- appt canceled
- Ancillary orders used to change the order
Remember, when an order has been checked in (an you'll know it has been, if it has an acc#) you can no longer change the order using "ancillary orders". Keep the order on your tech worklist and use the "verify" button to make the change.