To use versions on files/documents, you must first activate this function on your project:
- Go to the project settings tab on your project (general sub-tab).
- Expand the documents section
- Check the box "Activate version control on documen" and press Update.
From now on, you will see a column 'Versions' in the project documents table on the documents tab. Every time you change a document, or upload a new version, a new version of the document is stored, and the "version" number for the file/document will increase.
You can view or retrieve older versions of a document/file by