We created a new version in the MTM after updating triggers to a couple of our tags. After setting this live we noticed that all of the tags (not just the ones that had been edited) in that version had been deleted.
This was fixed simply by creating a new version, in which all the tags had been set to ‘added’ and re-publishing.
Although the issue was fixed easily, we were running the site without tags for a little while so had this not have been spotted we it could have caused us great inconvenience. Is this something anyone has experienced before/something you could fix to prevent it from re-occurring?