Hello Sergiy,
Thanks for the inputs. I did have a look at the SAP Note mentioned by you. It does describe exactly the same problem that I have encountered. My Basis colleague is looking in to it.
I will revert back once I am done with this.
But in the absence of this, I was able to get a simple work around by creating two alternatives of BOM (same BOM components) and assigning to two production versions of same header material. In this case order download creates two BOMs.
Thanks for the iput.
Srinivas
PS: I have posted another issue. Would be nice of you if you could give your valuable inputs on this too.
Srinivas