> personal S/MIME are as dead
Yes, but corporate S/MIME is still alive. As Jens said, this is the typical scenario for S/MIME, and they use a single CA for the entire company.
Bug 1438949 Comment 15 Edit History
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> personal S/MIME are as dead
Yes, but corporate S/MIME is still alive. As Jens said, this is the typical scenario for S/MIME, and they use a single CA for the entire company. So, the warning when switching CAs makes sense.