Exporting to PDF does not use style settings set on indiviudalparts

I'm using a multi part score for a band which has different instruments. This has as a consequence that certain instruments have more to play than others. In this case I'm working on a march. This implicates that the entire music piece has to be on a single, rather small page. To optimize and maximize the readibility for all players this means that I start with a general group of settings which are stored in a style. Then, each part is checked to make sure that everything fits on the page.
When I have a part ready I can then print it and the program holds into account all the different settings for an individual part.

If, however, I want to use the export function of the File menu and I export to PDF, the sdyle settings for the parts are not respected. This is strange behaviour. For some people this may seem logical, but in my case, I want to be able to export all parts to individuals file so that the person who distributes the music in the band has all individual parts at his disposal in a PDF to print it when necessary. For me, this is a more logical way of working.