Yeah, every now and then the TA gets into the Twilight zone. Time to call for the Ghostbusters then... Skuzzy to the rescue usually.

Now in the MA, with all those people online, I guess the "weird stuff" happens a lot faster. Hence the at least weekly reset.
Besides, some of the very big maps are hard to reset and after a week on the same map... before everyone logs due to boredom, the map gets reset manually.
And another thing. The maps are clustered. each week we get a different cluster with different maps that get rotated automatically. Skuzzy posted the lists in General.... you can do a search for them.