How to move document into an existing folder?

How to move document into an existing folder?

Hi,

1. a document has been created without selecting any folder (they weren't existing) i.e. new_lead.docx
2. I have created a folder named "Leads"
3. I want to move "new_lead.docx" into the folder "Leads"
4. I select the file
5. I click on Move

BUT

1. The folder "Leads" nor any other folders are displayed in the list

What is your solution? 

Abdelkrim BOUJRAF
http://www.amia-systems.com