Campaign group not working

I have created 2 Campaign groups in my Customer area: Autoresponse & Broadcast.

When I pause the autoresponder campaign and select the new group I have created, it doesn't save.
I see no way to add the Broadcast group to my already sent campaigns.

Any solution?
It would be good if we were able to group campaigns after they are done. We don't always think of grouping immediately when running the campaign. We could group the campaigns as "Archives", "Top Campaigns", "Failed Campaigns", "Promotions", etc...