BOM Materials Required (Exploded) Implodes

I have 3 Raw Materials namely to create a finish Product.

RM1 100KG
RM2 150KG
RM1 100KG

In exploded section, instead of maintening 3 items, the BOM consolidated it to 2 items. It actually implodes my BOM.

RM1 200KG
RM2 150KG

I have problem here since I am running the system in Batch Production. When proceeding to Stock Entry, the system should require 2x"RM1 100KG" not 1x"RM1 200KG".