Can't say for certain but I would of thought the only thing you get if you don't flag it is exp. If you do have it flagged you get Allied Notes and it counts towards your rank/evaluation.
Originally Posted by
Rocl
When you leave the Campaign you have to be in a certain range from the Dawn Aureola to get exp.
The 2 people I did it with were at the other end of Everbloom Hollow when I hit exit on the Dawn Aureola and they both got exp. It works just the same as Assault Runes of Release. When you've cleared the BC an "Objective Complete" pops up and then when someone exits via the Dawn Aureola everyone gets kicked out the zone and given exp.