Felicity, those are different programs. One is a smart campaign and the other is an email send program. Unless I am really sleepy.
I agree with Darrell --
I also think you may have sent this twice? Once as the email campaign and a second as a batch? The SC report would then look at the email asset and return 70k+ because you sent it to 35k, twice? Kind of guessing on this one, but confused where there's 2. Can you provide some more context?