Sorting ODS records before posting to other ODS

Question

Gurus, we have a strange issue where we have one ODS (lets call it DELV) that feeds another ODS (TOTSALS).  We have records in the DELV ODS like this:
K-DelDoc   K-Item    Mat    SchdLn   GMSt   Qty
10000      900001    MATX   1        C      10
10000      900002    MATX   1        C      15
10000      900003    MATX   1        A      0
10000      900004    MATX   2        A      0
In our TOTSALS ODS we get:
K-DelDoc   K-SchdLn    GMSt    Qty
10000      1           A       25
10000      2           A       0
Note: K- denotes key field
The problem is for SchdLn 1, we want the GMSt=C (not A).  We cannot filter to omit 'A' records from posting to the TOTSALS ODS, otherwise we would lose visibility to SchdLn 2.
My question, can we sort the records in the update rules of DELV to TOTSALS?  Or can we change the update rule for mapping GMSt so that in this scenario, we get the value of C?
I would appreciate the feedback and will award points.

Answer 1

Why dont we try this way... (assuming that you have only two values for GMSt)
Follow the same procedure  as mentioned above (creating two ODS's ODS1 and ODS2, loading one value of GMSt (lets say A) into ODS1 and the other value into ODS2 (GMSt = C). Now from these two ODS's load into your target ODS which is TOTSALS. When loading into TOTSALS ODS, set the keyfigures to addition mode in the update rules.
This gives you the flexibility to decide the order of loading. For example if you want the value of GMSt = A to be overwritten by value of C, then load TOTSALS from ODS1 first and then ODS2.
Hope this helps.
FYI, if you want to achieve this with just one ODS (TOTSALS) instead of three ODS's...it is possible to do so but is a little more complex (two cases in start routine).
Good luck!