I am writing an application that will send out .ics files to be interpreted mainly by outlook. When my applications sends an update, it will successfully update everyone\'s cale
So, you guys are correct and this is expected behavior. I tried adding the organiser as an attendee and ended up running into problems when I tried to create an event cancellation. The organiser would receive the email but be unable to remove from calendar because they were recognized as the organizer.
I ended up abandoning using ICS files and instead started using a library that communicates through Exchange Web Services. EWS allowed me to simulate creating a meeting on someone's calendar through an API and then adding attendees just like I created the meeting in Outlook. Specifically, I was using python so I started using Exchangelib.
I wanted to put an answer to this question for anyone else that may stumble upon this.