Is it possible to merge campaigns? I guess it is, just a case of knowing what to change in the database back end. Maybe someone has written a contribution to do this automatically or has done it before and so has a list of what needs changing. I looked at changing the campaign_id of a record in the email_marketing tablet, and sure enough that record now showed up in the campaign i wished to move it to. But no stats or anything are there for it, and I don't want to risk only half moving it without knowing all the sub-relationships.

Basically just want to tidy things up. Someone created new campaigns for each email when really they should all be in the same campaign.