Today, I downloaded the Aston Martin update. Initially I had two new challenges: Endurance Gauntlet and the 500.

The 500 Challenge has gone missing: I can't find it.

Anyone else got this problem?

Note: I started the Endurance Gauntlet challenge, then decided I didn't have enough time to try and complete it within the next 5 days... so I went to Cloud Save and downloaded my previous save. That's when it went missing...