You're correct Moonsshadow. Even if a mob goes unclaimed, if the mob is still attacking and hasn't went completely idle, then any procs inflicted on it will remain.
Lol one time we were doing Tunga and had proc'ed red, but then we had some trouble and it went yellow, another party stole it from us and killed it. Guess who got key item? Us. lol
Ya know that glitch now shows whoever got the first "dirty" ability/spell/ws whatever it may be. Red proc is Seraph blade, WAR 1 hits seraph but it's dirty, WAR 2 comes in and hits red. Reads as follows "WAR 1's attack staggers the fiend, the fiend is frozen it it's tracks!" Shitty programming is shitty.