[Plugin: Movable Type Backup Importer] Custom fields

Hello,
I am curious if the MT Import Backup will grab content that is in custom fields in Movable Type. In my Movable Type installation, some entries come with fields such as FullVideo, which I believe are custom (a standard MT export did not grab content from those fields).

http://wordpress.org/extend/plugins/movable-type-backup-importer/