Michael,
Confirming your issue as well. I ran the same report on both PROD and Preview and they are identical and wrong. The issue is in Excel and not in PDF
Srini
UPDATE: I got a note back from our support engineer that reads, We have an issue that was reported by another client and we have a fix that is being tested. We are just awaiting the verification from our QA team, once that happens it will be deployed to production.
I imagine we'll see something tomorrow or the day after.