vJass & campaign

When I edit the map that uses vJass, and is within a campaign file, the preprocessor doesn't react. It saves everything, but when I test the campaign, after I click on the button that should start loading the map, only a black screen appears.
I've disabled all vJass triggers and it loads the map fine.

How do I make it work?

Grimoire only hooks the saving process for individual maps.
Extract whatever map you want to edit from the campaign, then edit that. Keep your campaign in individual map files, and only merge them as the last step.

At least, this is what i remember on how campaigns work with vJass.

I was afraid of that. Guess I'll have to import objects into induvidual maps.