How to find out the creation time of an appointment in Outlook calendar?

Question

Outlook

Colleagues, such a question appeared, I can’t resolve it with logic, can someone tell me?
First, something that is 100% clear: In the Outlook calendar, we create past appointments ie. Today, we have created meetings that should have taken place 10-12 months ago, i.e. at the beginning of the year. It is clear that the time of creation of these meetings will be today.
But what about when exporting? Let's say we have a valid PYa, with letters, a calendar (there are already past meetings in it). We export this box to PST, and then import it into our box. Letters, a calendar with meetings, including past ones, are also transferred to us. And here's the question, in the new box where we made the import, at the meetings, what will the creation date be? At the time of import, or as in the original box? This is where I get the dissonance...
Can I see it somehow, PS or something else?
UPD: You need to know this in order to experiment with Retention policies.