Having a special date/time/date-time chooser in dynamic metadata would make it a lot easier for users to add things like “Original Publication Date” or add more finely granular expiration dates like “Home Page Expiration” and “Section Expiration”.
See CSNEW-253
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I have to handle this now by putting the archived date field in the data definition, which is unfortunate because it "feels" like metadata. But at least it works!