@cheminge
there are three scenarios
day event repeats for 5 days, m-f
you drag one of those someplace out of sequence,
tuesday to saturday. it STILL MUST BE FULL DAY,
it STILL has same uid (part of event collection) AND a recurrence id (in case you move it back)
5 day(full) event, not repeating
you drag tuesday to saturday
same UID (part of the event collection)
it can have a different time scale hours vs day, not repeating
if you modify it. and drag it back, its a new event in the middle of old range it lost its tuesday identity on drag out
5 single full day events covering m-f, one per day
different uid each, anything is game
yours is every other week, recurring or a particular day of week
which of the events did you move?
in each of the 1st two, if you delete the base event, all uid attached events go away too (event family is deleted)
second one the outside event is no longer tuesday modified
but it is still part of the family (uid)