Comment 56 for bug 115153

> Received date is what people really want Date to be

You're not necessarily correct in that assertion.

I don't see, at this point, why your patch needs to be dependent on whatever's going on with Received date is a mystery to me. The patch I made for
bug 264941, which implemented the menu behavior you cite in comment 13, simply preserves whatever the original sorting mode was. Do the same thing, don't change the sort criterion at all.