I don't understand entirely what you mean, and what the HLL entry has to do with it. Capitals are moved randomly if they need to, I'm not sure if they can still change continent or if that's been removed. (I've seen a French capital in the Antilles.)
This is why we should never have a revolt entry that permits another country to lose it's capital. For this case I suggest Brabant cannot revolt until after 1491. I know the event allows BUR to not move its capital, perhaps that choice should be deleted, since it causes this anomaly. If we want to keep it, I suppose we have to make Brabantnot able to revoltt from BUR, which would also allow them to be revolters from 1419.