According to this page: (unless I'm not reading it right)

https://www.delta.com/traveling_chec...cked/index.jsp

I can't find it at the moment, but, there used to be a clause that, if your stopover from int'l to domestic was less than 24 hours, you were allowed the int'l luggage allowance for your continuing flight(s) - - in which case you would have to pay.

Oops! See post #6/7.