Ah, so it looks like I get to munch down there after all... I'm liking it!

Here's something strange: I booked my outbound and my return flights separately (had to wait for fund availability). When I booked my return in economy for 40,000 miles, they didn't deduct those miles from my account, even after 9 whole hours. When I log in it does provide a confirmation number (6 alpha-numerical) but doesn't provide an actual e-Ticket Number (the 13-digit one). When I click "Manage" under my return trip it reads the following:

Thank you for choosing United Airlines. Your purchase is confirmed. You will be promptly notified once the internal processing of your reservation has been finalized so that you can request additional receipts, export to Microsoft Outlook, refund or change your flight, view/change seats, check-in, or email or print your itinerary.

Should I contact them and ask if they will be sending me an official receipt? I'm thinking that would be the moment they actually deduct the miles from my account. Has this happened to anyone else?