When I look at my carcass parts in part properties I see that the grain for my ends and backs is called out as length.  When I look at tops and bottoms it says no grain.  But when I look at my parts in Ardis the tops and bottom are called out correctly as Length.  What controls this?  I see in Library designer where grain is noted for the ends and back but that field is blank for the other parts.  What causes the tops and bottoms to default to length once it hits Ardis?