Hi Diogo,
That might be an old description because if you look at the Move Mail code stage, it is set to not even attempt to move the mail if the input for 'Move to Sub-Folder' is empty.
I temporarily removed the if/then statement in the Move Mail code stage and it still doesn't move the mail back up to the top level of the Inbox.
You could probably grab an experienced .NET developer to write some custom code that will accomplish moving mail up to the top level if that's what you need. Otherwise, you might want to see if the new MS Outlook VBO in 6.3 can give you the solution you're looking for.
Respectfully,
Dave
Dave Morris, 3Ci at Southern Company