Disabling this membership stops all replication of the replicated folder on the selected member but does not delete the folder ...

Disabling this membership stops all replication of the replicated folder on the selected member but does not delete the folder or its private data. To temporarily pause replication on a member, instead disable the connections on the member. Do not re-enable the membership unless the contents on the selected member are no longer needed, as this starts a non-authoritative sync. Are you sure you want to modify this membership?