This issue is also related to this forum question about not being able to manage/delete forms. I've just started managing an existing sit that has several dupes of the same type of form, with slightly different names, all with different storage. It'd be great to be able to create a single form and have it deployed on several pages, with a form manager that lets users edit and delete redundant forms.
I'm kind of appalled by this thread and the lack of response.
The inability to do batch changes to your mailing list (apply tags, delete groups, etc.) is insane.
I thought I found a workaround by exporting my full list, editing in excel and then reimporting, but when importing you can only import three fields (email, first, last). What is up with that? Why let me export all that data and then not import it back? Why have things like segmentation and tags if you can't group things over time?