No updates sent after changing meeting settings

Hi All,

I looked up the forum but couldn't find an answer.

I'm still new with using Zoom on a windows client (win 10) and created several meetings which an invite was automatically sent. So far, so good.

Due to some timing-conflicts the start time of the meeting needed to be adjusted from 7pm to 6:30pam and one attendee was added. I expected that automatically an updated invite will be sent to existing attendees as well as an invite to the new one.
Guess what: Nothing happens!

Is there any settings I need to apply, or what is necessary to get meeting-updates sent?

I'm looking forward to your support.