The level of the NPCs is not done by creature_template anymore. Scaling of NPC is now done by creature_template_scaling and for now I rather not touch it.
Hey,
we use mincountOrRef and maxcount instead of MinCount and MaxCount.
Here is the updated query:
UPDATE `gameobject_loot_template` SET `mincountOrRef`='1',`maxcount`='1' WHERE `entry`='233645' AND `item`='118250';