Q:
Transmuting Foefire Weapons
Since you’re talking about transmuting a non-Precursor / non-Legendary weapon, it’s really not a big deal. Those are the only weapons that have issues with the transmutation process since you’re wanting to use them for future upgrades. Your example of Foefire weapons will work just fine, assuming that you’re not moving that graphic over to one of the weapon categories listed above.
Just last night, I finished my new off-hand weapon from the Mystic Forge. It’s one of those purple ghostly weapons that uses of x250 Ectos and other things. The moment that I got it back from the MF, I used a Fine transmutation stone and I was done. There’s really nothing to worry about.
We are Test Group F. (Don’t ask about what happened to the previous Test Groups.)