Purchased for $757 million in 2000, the GetThere corporate booking tool is hardly mentioned in Sabre's annual reports. The TripCase mobile app isn't mentioned at all. As usual, neither came up during this morning's earnings conference call. Along with Sabre's virtual payments offering, these products have bounced around inside Sabre and had four leaders in less than three years. Amid a company restructuring, the corporate product . . .