In file: \WoWPro_Leveling\Alliance\95_96_Ludovico_Talador.lua at line 546:

-K Ra'kahn|M|59.48,59.59|RANK|3|
+K Ra'kahn|M|59.48,59.59|RANK|3|QID|34196|N|Rare kill; may drop Ra'kahn's Bite (i563 Fist Weapon)|

WIthout the QID, the task keeps appearing for that area after completion.

Closed as this is now included in issue #408