Display of Alternative BOM in IH01 or IH05

Hi,

I have a requirement to see the alternatve BOM related to a material which inturn is attached to a Function Location BOM.e.g. FLoc is A, Floc BOM contains components A1, A2, A3 where component A3 has BOM 1 with component B1 and BOM 2 with component B2 attached to it. When I explore this FLOc BOM for A and i m drilling down to component A3 I can only see BOM 1 for this A3 where as I want to see BOM 2. Both the BOMs i.e. B1 and B2 are released, active in system and are defined for usage PLant