Disappearing Order Lines

We have an occasional issue with order lines disappearing in BPCS.

We have triggers on ECL for Insert, Update and Delete that records details 
of the change in a log file. The update should show a before and after 
image.

In the case of the missing lines, the user is usually updating the 
quantity and request date on the last line of the order and adding a new 
line at the same time. The result, on some occasions only, is that the 
existing line no longer exists in ECL and the new line does. The log file 
in those cases shows a before and after update record for the change to 
the existing line, but instead of an insert of the new line it shows that 
BPCS updated the existing line to be the new line !

As an example and order has lines 1,2 & 3 all for some quantity of the 
same product on different release dates. Line 3 has the quantity reduced 
and line 4 is added for that quantity a new release date. The result 
should be an order with lines 1,2,3 & 4. When the probelm occurs is that 
the order now has line 1,2 & 4, no line 3. The log shows line 3 being 
updated with the reduced quantity, then shows line 3 being updated to be 
line 4 with its quantity !

Has anyone seen anything like this ?

SSA Global Support have no record of a similar problem.

Any clues would be helpful.

Thanks.

Doug McLauchlan
Office: (503) 748-5988
Cell: (503) 706-7525