The decision by United Airlines’ management to use Continental’s Shares reservations system for the merged carrier has been causing serious problems since its implementation last weekend. So the news that the airline is working on a new version of its IT platform, integrating some of the features of the pre-merger United’s Apollo system, is very welcome, indeed.

It was hardly surprising that CEO Jeff Smisek and his team chose to keep Shares, given that most policies and practices of the combined carrier have followed the way Continental did business under Smisek. But in this case, the decision made good financial sense — Continental has owned Shares for years, while United paid Travelport, the company that owns Apollo…