File Versions
On Jira Data Center all uploaded files are automatically versioned.
NOTE:
On Jira Cloud, file versioning does not exist yet. As such, if you upload a file with the same name as an existing file, the existing file is overwritten.
This happens if you upload a file with the same name as another file already attached to the page. The existing file will remain, but the new file takes its place. Any reference to this file (embedded images, and file links) will now reference the new file.
The old file remains attached to the page, and shows as grayed out. If you delete a newer version of a file, the older version will show up again.
