replace() does not set created_at and updated_at when using Timestampable behavior

The Timestampable behavior does not set created_at or updated_at on a call to replace() (if it doesn't exist yet it ought to do both).

I see some old discussion on the subject of possibly exterminating replace() rather than fixing it to work with things like behaviors, but I also see that a similar ticket was opened for Doctrine 1.2 and the issue has apparently been addressed there.