Where from is taken the parent area (displayed in black) of mountains displayed on profile pages ?
For some reason, some of them do show a parent, some not. Sometimes it varies amongst sister pages (with same parent) for a reason I can't explain.
When a parent is displayed, and if the page has more than one parent, what is the rule that defines the one taken as default ?

Example on my profile, the Cantal should show the Massif Central as parent, Chočské Vrchy should show the Carpathians as parent too, just like Gorce with who it works.