hierarchy not loading through pr chain

I'm facing a weird situation.

Am trying to load Pr Ctr, Cost Element, Cost Ctr hierarchies.

1. Am loading through Infopakages manually - Data is going in fine & active.

2. Used the same infopakages in a simple Process chain (Start -> Execute Hier Info Pkg -> Attr Chng run). No hierarchy is getting loaded. This is happening for all 3 objects.

Other Pr chains (attr, text, tran) are all running fine.

Any guesses?

Thanks

vishno