Of course, I am not concerned about this at all. I am just telling you that you will have to create the contest from the beginning
From their doc:
What about my contests?
We will not be migrating active contests onto our platform. We will be refunding the contest amount back
to your balance and then our dedicated concierge will create a contest for you on the Freelancer.com
platform, waiving all fees. A concierge support member will be contacting you to assist.