While working on Masamune Lv.85, I have been seeing issues w/ Cirein-croin randomly unclaim, however hate was not lost so this was not a "De-aggro". Noone was engaged with any other monster at the time either. Second time around it lost claim again not long after Provoking it during pull to camp.

Last night the same issue occured at Itzpapalotl, we spawned it, a little ways down the road going to camp, it lost claim, but no hate reset.

Please look into this as soon as possible, would rather not lose an NM to some random group over this without even being able to engage in battle.