Data Load in DSO after Enhancement

Hi Gurus,

The Scenario is

Infosource-->DSO

Update Rules

Infosource has 20 fields but all fileds are not mapped in DSO

only 7 fileds are mapped in Update rules.

Now I need the remaining 13 fields also in the DSO.

How ould the history will come into those 13 fields now?

PSA has only 27 days data left as we have a process chain which deletes PSA data

at the end of every month.

Can anyone please explain.

Regards