Delta upload in XI and calling Infopacakages in Inbound Proxy

Hi All

I have a scenario where File-- ->XI ----->BW

In this scenario I have to pick a file compare and send it to BW system. Before sneding into the BW system I have to apply the logic of delta upload in XI.

Requirement: the recent file picks the data for the current week and previous week . We have to eliminate the data of the previous week and send the recent weeks data to BW in file format i.e. data of recent week will be sent eliminating the data of previous weeks.

I have one more query

How to call the 6 different infopackages in ABAP Proxy.

Do anyone know the process for doing the same??

Regards

Abhishek Mahajan