I'm new to using Strava challenges, and signed up to the New York running club virtual marathon challenge which is this week.

I noticed today that my three runs this week have not accrued to this challenge because I had randomly also joined an Adidas challenge, and my runs have been credited to that challenge instead.

I've researched and understand that a single activity can only count towards a single challenge - fair enough. How can I migrate these activities away from the Adidas challenge so they would count towards the New York run club instead?