Air France canceled one of my flights?

I have an itinerary of 4 flights from Atlanta-London-New Delhi-Brussels-Atlanta. Both the trans-atlantic legs are on Air France Operated by Delta airlines. I received an email from my booking agent Expedia.com saying that the last flight Brussles-Atlanta is cancelled by Air France and I need to consider other options. However both Air france and Delta are allowing bookings on that flight for that specific date. Has anyone experienced this before? Is there a way to confirm if the flight is canceled?