Not IB, but I recently put on hold a CX award itinerary. It said "on request" the entire duration of the hold. On the last day of the hold, I purchased. Within 4 hours, it went from "on request" to "ticketed."
Of course, YMMV, but I'd say relax. The "on request" thing does not mean there's a problem.
For additional information on the "on request" issue, see
http://www.travelingbetter.com/forum...ead.php?t=5261