Bf-109 Challenge Campaign issues

[RafaPolit]

Good afternoon friends!

I'm going through the Kurfust Challenge Campaign, and I am facing issues: I go through the task, the voice tells me "Good job! You may end the mission now!", and when I end it, I end up "only" with 50 points and it gets listed as a Draw.

I assumed that it could be that a particular target changed value and it would happen to just one challenge, but it's now happening with more than one.

Is this something usual? Since this are "official" and paid campaigns, I would think that any change in the system that throws the campaign off-course would be fixed by ED.   

Thanks for any feedback,

Rafa.