Can't toggle activation on membership levels

I’m sure I’m overlooking something obvious… I had a batch transfer of members from Ning and would like to assign our “basic” membership to them all initially. However, I can’t toggle activation of that level. In fact, I can’t toggle activation of two of our three levels. Both those that won’t toggle already had members assigned to them…

Tried de-activating those members, no dice. Can’t drop members from the level temporarily because the the levels I need to drop them from don’t show on the drop-down menu…

Can you help me work this one?

BTW, we think this plugin is fantastic – it was exactly what we wanted for our site. :slight_smile:

Many thanks,