If that email address was already previously on the account, its contact record may be attached and unable to be edited. I'd advise adding the updated address to the system via the type/paste multiple or import file methods, since the singular add will likely encounter the same issue. Once that email address has been added as contact, you can update it with all the associated contact info (name, address, custom fields, list memberships and tags, etc.)
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Hello @AmericasBoatingClubHiltonHead ,
At this time, the campaign view will always revert back to its default setup, and doesn't retain a preferred or last-checked sorting / viewing.
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