Teams Meeting disappeared from Calendar

Good Morning,

I have a strange issue happening to one of my users and am not sure where to begin to troubleshoot.  The Admin assistant for our Executive Leadership Team has a recurring Outlook meeting set up using the Teams Plugin ( So a Teams meeting).  For this weeks meeting, she removed all the Teams information from the body and change the location for a conference room and then sent out an update.  After she did this, the meeting on the CIO's calendar disappeared from all devices; mobile devices, Outlook, OWA, etc.  

This has also happened to another VP a couple months ago to the same meeting and a 1-on-1 meeting.

Just hoping someone might have come across something like this or how do I even troubleshoot this.

Thanks