[rt-users] how to unset a ticket's Due date?

[Alex Peters]

I'm trying to remove a Due date from a ticket.

Historically, entering "-" or "0" into the field worked fine for me.  When
I try this now however (RT v4.2.5), the page just reloads and the date
doesn't get removed.  Neither "not set" nor just whitespace have any effect
when entered either.

Nothing amazing is showing up in the logs:

[...] [warning]: Couldn't parse date '-' by Time::ParseDate
(.../RT/Date.pm:231)
[...] [warning]: Couldn't parse date 'not set' by Time::ParseDate
(.../RT/Date.pm:231)

What's the "official" way to remove a Due date from a ticket now?
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