Google Calendar is hijacking Outlook meeting responses

I use Outlook with Exchange server for my daily calendar. When I send a meeting invitation, it comes from my christine@myworkemail.com alias. The invited attendee gets the meeting invitation in their email inbox, where they can accept/reject the invitation. Their response USUALLY comes back to christine@myworkemail.com, where it both shows up in my email inbox, and the acceptance is indicated in the meeting item.

Over the past week or so, I have not been receiving responses that people are sending. I figured out today (I happened to log into my Google account, which I rarely use) that their responses are being sent to my @gmail account rather than back to my @myworkemail account. What the *#$? I am guessing that these people use Google Calendar, and since Google knows @myworkemail as another email alias, it's not bothering to send me the responses any more. Really, really annoying.

Other than disassociating @myworkemail.com alias from my Google account (which I don't want to do, since it's useful for having all my Google docs in one place), does anyone know how to tell Google to cut this out? And why did it just start happening? If anyone can shed light here it would be great.