Cannot assign Bounced Members to another group

Sorry to keep 'bugging' you about 'bugs' but its a plugin I use often.

I have a bunch of bounced emails which I want to add to another group so I can rework them later. However, the strange thing is, when I select them all and bulk add them to group, the groups that pop up are empty. See screenshot which is much 'clearer'.

Ciao and thanks.

Just realized there is no way to add screenshot on wpmu support. Weird. Seems like a basic thing to have... Anyway here it is: