delta load with filter

Hi All:

I had an info pkg that loaded my division specific cube from a cross divisional ods where company = 1 (this filtered down to the only division my cube serves). All history was loaded this way. Now i'm trying to change this infopkg to a delta load. However, when i change the definition of my infopkg to delta, I am no longer able to filter on Company = 1. does this sound familiar? Any suggestions on how to work around this?

Thanks,

George