Calendar deleted but have files

I have just discovered that one of my iCloud calendars has been deleted in the last week.

I checked my time machine backup and found the folder for the deleted calendar in ~/Library/Calendars which contains all the events in the calendar.

After creating a new calendar in the Calendar app I tried dragging and dropping all the events into it but after successfully importing they immediately vanished (one by one).

How can I recreate the calendar from the files I have?

Any help much appreciated.

 

Thanks a lot for this suggestion - seems to have worked.

I turned off iCloud and then did the drag and drop method again to an "on my mac" calendar. This time the events didn't start deleting so I followed your export/import advice.

Bit disappointing Time Machine doesn't offer a more elegant solution for calendar recovery.

 

I'll definitely start doing regular backups of calendars now.. and contacts and bookmarks! (I used to do bookmarks backups until iCloud came along and made syncing simple.)

I'm still not sure what happened to the original calendar. I'm inclined to blame iCloud but I think someone might have deleted it so can't be sure.