Infopackage returns 0 when triggered from process chain

I have an Infopackage triggered by process chain (say PC A) which is further triggered by other meta-chains.

So PC A, is triggered by PC B, and PC B is triggered by PC C.

Daily it returns 0 records.

However, if I run the process chain manually, that is PC A, the infopackage returns correct number of records.

What may be the cause?

Rusyinni