I've been consistently going back to old beast tribe dailies to work on my collection of anima weapons, and I notice I'm accumulating more grade IV materia than I'm ever really going to meld.

I was thinking instead of transmuting these with Mutamix to see if I can't get either the equivalent level crafting/gathering materia or possibly even grade Vs that I actually COULD use. But will this work out the way I'm thinking or will I end up with lower materia grades as well? It'll be only grade IV materia that I'm transmuting.