I apologize this is happening with your contacts! We have seen cases where lists disappear or only the first 50 when adding/removing lists from the Contact Profile. This is an experience we are continuing to troubleshoot and have tracked in your account so you may be notified when it is resolved. In the meantime there are a few workarounds we can suggest:
Exiting and re-entering the contacts area allows all lists to re-appear.
Use the stars to mark the list that is not appearing as a favorite on the main contacts page. This will make that list appear at the top of the selections in the individual contact list selector.
In the contact profile view, click the blue + sign to add lists. Select ALL lists to be added. Click Apply. All checked lists should now be in the lists box.
Do any of these workarounds help?
Frankie P. Community & Social Media Support
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