MuK Documents is a module to create, manage and view files directly within Odoo. MuK Documents Attachment allows to store Odoo Attachments inside the Document Management System.
Set a directory, where attachments should be saved by default. In case you want to migrate just click the button "Force Storage Migration".
A new view is provided to see all stored attachments. In case you want to migrate specific attachments, an action is provided via the "Action" menu.