Well at first I thought so, but it's not.
The "Disney by Glénat" series consist only of *new* stories created especially for Glénat.
Here is the full list on the editor's website :
http://www.glenatbd.c...inales.htm
On the other hand, Mickey Maltese is an already published story by Cavazzano & co, and it's listed in the "Various" section by the editor :
http://www.glenatbd.c...divers.htm
But thanks for pointing that out, because I left the issue number to 6 (as it was first indexed as the 6th volume of DBG), instead of one.