Copy data from one snapshot to other at DSO level

Hi ALL,

I have below requirement

In DSO i have been loading weekly snapshots every week. We realized one of the snapshot(25.2013) got corrupted and the work around for it is to copy accurate week i.e 24.2013 into 25.2013 . Why this approach, this is due toare no backup taken in source system.We are deleteing data in source system once we pick it into BW.

My approcah is

1.Create a self loop on the dso

2. write logic to copy from week 24.2103 to 25.2103.

Can you guys help in how to do proceed with logic

Regards,

RV