Three times today, on 2/28/2015, my team and I have downed Crota on hard mode; however, neither of the times did the death register. The first time, I witnessed the swordbearer hit Crota 4 times after enraging, he then got back up and killed the SB. Another player saw Crota disintegrate and then immediately respawn. The next two times, Crota enraged at 3 hits, as usual, to which we proceeded to down him as we did the previous times. However, both times as Crota raged and we bombarded him with rockets, he did not go down or even lose a single hitpoint of his shield. The 2nd time nobody was dead and the 3rd time only one person was dead. The swordbearers (hive) go down quickly (we use the center window method) and we move to right boomer tower for orges. We are at a loss for what the issue is. It is quite demoralizing downing Crota multiple times and receiving nothing for your efforts. Please any ideas or suggestions would be greatly appreciated!