Where is the event_pid? I do not see event_pid when I view my global $_POST variables in my php IDE.
Here is $_POST array elements that I see:
start_date
end_date
text
id
rec_pattern
rec_type
event_length
!nativeeditor_status
But no event_pid
When you have recurring event , which occurs few times and change properties of some event in this sequence - the new record in db created , which has event_pid pointing to the ID of master event.
Normal events has not such property, it exists only in modified events from recurring sequence.