2lis_02_scl data flow issue for PO value

Hello friends,

I have an issue in MM data flow for the purchasing cube.

data flow path: 2LIS_02_SCL --> DSO1(w.o.)-->DSO2(std)-->DSO3(std)-->Cube

DSO3 data issue:- First load is fine.For the second load PO value becomes zero after GR happens to the PO.Why is this happening only when GR is happening instead other scenarios are working fine deletion, undeletion by taking po value as in overwrite mode. Earlier when i tried to consider po value as summation mode it was giving doubling issue. Is there any way that I can handle to get PO value as 100$ instead 0 .pls. throw some light on this.

Transformation mapping.

standard rule group: 0storno-->0storno

technical rule group: 0storno-->0recordmode

PO Line item 10 --- first load---- loaded PO value 100 fine.

PO Line item 10--GR creation---PO value becomes zero( PO value is in overwrite mode here is the issue which we are challenging explained in below scenario)

DSO2 keyfields: PO No, PO Item, Process Key, Schedule line

DSO3: PO No, PO Item, Schedule line

DSO2: data

DSO3: data

Active Table : Po value is becomes zero since it overwrite the existing record.

Change Log Table

Thanks.

Dolly.