Bulk change state to "unclaimed"

Hi there…

I have 363 Places. The goal is to change all listings to “unclaimed” and then invite users to come claim their listings.

When you Edit the place, neither the “claimed” or “unclaimed” radio button is selected.

I exported the Listings data and can find no database column that represents “claimed or unclaimed”

My thought was that if I export the list, change all to “unclaimed” status on the csv file and then reimport that list, it would save a lot of time.

Is there a way to do this? I have attached the csv file.

Thank you!