Multiple caches for smoke

Hi guys, I’m actually working on a battle between monsters that came out from cards. I have already baked the smoke simulations for the cards and now want to bake separately the dragon’s breathe and the other monster’s spell. When I create a second cache, I still see and can modify the cards’ flames as if they were part of the second cache. Is there a way to avoid this?

Thanks

Ps: the blend file being too large, I uploaded it to mediafire
link: http://www.mediafire.com/download/fg1ko2vosy51uih/sim_2blend.blend