Question about deadline/schedule events date text property

[Daniel Fleischer]

Hi, I'm working on an unrelated project that collects events from agenda
buffers. I noticed the following: when you have a series of a repeating
events, scheduled events have a date text property of the form
    (1 9 2023)     date matches the instance date

while deadline events have
    738529         which repeats for all instances

Is this intentional? Why don't they have the same format/behavior? 

The setup - events have the form:

* TODO Test
SCHEDULED: <2023-01-09 Mon +1w>

or

* TODO Test
DEADLINE: <2023-01-09 Mon +1w>

Open an org agenda for a month and examine the text properties of the
events.

-- 
Daniel Fleischer