If the ORG is designated a terrorist group like Palestine Action, how much of a grace period will existing members have before they get disappeared to Azkaban-in-the-Falklands or wherever all those designated terrorists will need to be contained? Is not renewing your membership enough, does one have to renounce it within 24 hours of the designation, or will the ruling be retroactive, condemning anyone who was a member years ago even if they let it lapse?