I have the same issue. I accidentally replaced the data from one event to another and now have no way of restoring.
Hi there, @user37196 and welcome to the Community 
Could you please specify the name of the event that was accidentally edited and the estimate date and time when it was done? I’ll be happy to restore the widget revision you need 
Hi Max -
No worries. I re-created the event. Do wish there was an automated way to retrieve these, though. It is quite easy to override text for one event with another when working on multiple events at the same time!
Thanks for following up.
Sheryl
Great, thanks for the update!
Regarding the automated way to retrieve this, we already have a Wishlist request for this feature. Feel free to upvote it: Add an undo button to the widget editor