Item Tracking & Transfer Orders

Version 3.01B on SQL Server After posting a Transfer Order Shipment with Item Tracking Lines (lot control) the Item Tracking Lines do not exist when attempting to the Transfer Order Receipt. This is an intermittent error. There has been development on the “Find Entries Automatically” function to “find” Lots by Sales Order Number. Navision seems to lose the ITL’s. Another intermittent error occurs when trying to post the Transfer Receipt, the message CU5705 Writedown derivedlines Base Qty to Receive must be 0. Again the IT Entries have been “lost”. Any ideas or experience of this.