DSO to Infocube Transformation problems

I am trying to do a one to one mapping from a DSO to an Infocube. However I found that all my key figures are doubled.

I created the transformation using automatic generated rules. No rules on Key figures either but key figures properties are set for summation aggregation. I noticed that when I look at the monitor, the 100 records in my DSO increase to 200 records, then back to 100 records inserted in the Infocube.

Any ideas what I'm doing wrong?