None of the armor that drops in fabled runneye solo can be salvaged.. it does NOT have the 'no salvage' tag either Additionally, it transmutes to the incorrect tier of materials. I got planar powder and I should have gotten celestial powder
I reported during beta there was an issue but must have been missed. Unable to salvage and transmuting results in previous expansion's (PoP) planar mats. However the weapons in solo and heroic, do give "Greater Planar Weapon Essence"
Good to know.. I haven't been breaking weapons from zones down into weapon bits since rares are easy enough to get. and infuser bits and infusions are much rarer beasties.