PCID - Customer Shipment Entry - Removing a Pack Line

Testing PCID in 10.2.400. While testing Customer Shipment Entry I needed to remove a Pack Line. I received the following error. I was able to delete a Pack Line, without a PCID, from a different Shipment so the process I am using works.

Has anyone had this issue with PCID?

Business Layer Exception
Cannot delete shipping line.

Exception caught in: Epicor.ServiceModel
Error Detail

Description: Cannot delete shipping line.
Program: Erp.Services.BO.CustShip.dll
Method: ShipDtlBeforeDelete
Line Number: 30888
Column Number: 17
Table: ShipDtl

Client Stack Trace

at Epicor.ServiceModel.Channels.ImplBase`1.ShouldRethrowNonRetryableException(Exception ex, DataSet[] dataSets)
at Erp.Proxy.BO.CustShipImpl.Update(CustShipDataSet ds)
at Erp.Adapters.CustShipAdapter.OnDelete()
at Ice.Lib.Framework.EpiBaseAdapter.Delete(DataRow dr)
at Erp.UI.App.CustShipEntry.Transaction.Delete()

Resolution: You need to enter the PCID you want to delete in the Summary tab PCID field. Press TAB key. It will ask if you want to delete.

This makes sense because you have to enter the PCID the same way to add it to the Pack Slip.