I agree with FlybyKnite in that it's usually up to your auditor to interpret the rules, and as long as you get the answer that you want from them, I'd leave it at that. As well, if you want to pay your own way from AMS to CDG, I can't imagine anyone having heartache about that, irregardless of the "48 hours", because that is indeed applicable when the company is paying your travel expense. Contract Administration can probably tell you the correct answer, but since they don't reconcile your travel expense report, I'd rely on your auditor.