Missing Meetings on Dashbaord

Has anyone ran into the issue of Meetings disappearing from their Meetings Dashbaord?  We host a lot of meetings and thankfully keep our own spreadsheet of scheduled Zoom meetings, so we recently noticed that some would randomly disappear from the dashboard. 

I've tried to look at "Recently Deleted" items but there's not even the option on my Meetings Dashboard.  There's only the "Schedule a Meeting" option.  Then if I look at the meeting invitation we send out via Microsoft Outlook, it shows that the link to the missing Zoom is still active when clicked.

Any help or suggestion would be great!