Historical Archive folder Skipping ? type = 2048

Hello dear all,

I have another interesting question :

In Lotus Notes 8.5 & ES1 6.6, I have a skipped folder terminology to understand during historical Archive task :

" Skipped Folder: Archivage\JENIUS, Type: 2048 "

What this type of folder ?

What settings can we change in Lotus or ES1 to archive this user created folder in notes mailing database ?

Thanks for your idea

Regards

Amaury