Membership does not record registrants.

I have created test accounts then deleted them once done. The subscriptions are still in place even though the accounts are gone. I can't drop the members out of the subscription and none of my new registrants become available under the 'all members' link. I only see the super-admin account.

I can't remove the one of my subscriptions the test accounts were assigned to either and it shows 13 members in the subscription summary.

That issue was previously raised but not resolved:

https://premium.wpmudev.org/forums/topic/deleting-subscriptions#post-123863
https://premium.wpmudev.org/forums/topic/deleting-a-member-and-subscription#post-149830

My databases all check ok.
I have uninstalled/reisntalled disabled/reenabled Membership several times.

I suspect the problem arises when you delete members from the users menu without dropping them out of the subscription first.

1) How do I remove the test subscription?
2) How do I get to see the registrants in the all members view?