Forum:Chain Material Question

When you use the effect, all Fusion Material Monsters are removed from play. You cannot send one Fusion Material Monster to the Graveyard and remove from play the other Fusion Material Monster.[3]

This confuses me a bit.

Scene. I have Dogma and Plasma on my hand and fusion summon destiny end dragoon with polymerisation. i activated chain material before. i search out another dogma and plasma out of my deck and they are removed. but the ruling above confused me a bit, are the dogma and plasma which where used to fusion summon with poly also removed? in this case it would be useless most of the time, because some destiny heros in grave are more usefull with destiny end dragoon.