I changed a repeating event and this ****** DELETED 10 events. How to restore this from timemachine backup?

On the iPhone you can change how many times an event is repeated. I changed that number from 10 to 11 and it automatically deleted all my 10 events and replaced the valuable notes with *nothing*.

I do daily backups with timemachine, but cant seem to find a way to restore the events - since I already made a lot of changes today.

next question: is there an ical alternative, which is actually safe to use for business?