About Revisioning

Normally, within a directory, only one document can exist with a particular document name. Attempting to upload a document with the same name as an existing document in the same directory node will generate a warning message and the user will be invited to choose, either to overwrite the existing file, or to create a revision directory and save a new revision  of the document.

Within a Revision Directory, documents with the same name can co-exist. This functionality enables users (with appropriate access privileges) to upload a new revision of a document without overwriting previous versions. Users,  can elect to download the current (default), or an earlier version of a document. The document revision that you intend as the 'default' can be changed by anyone with the appropriate access privileges (see revision directory properties).

If nodes were linked/embedded/attached to a document before the document became a revision then whichever is the 'default' revision of the file will be associated with the node