[Tatsfield]

Any adaptation of the "D" to "R" sequence would only take place during that aspect of driving the gearbox. Cruising on motorways or thrashing around country roads would have no effect on the stationary to forward or backward movement. It is possible that the box did carry out its own adaptations when you moved the car backwards and forwards and that it just took time for it to take up the software sequencing. Let's hope that it now continues to behave itself and that the problem is over. There isn't much that you can do now as it is not exhibiting the symptoms any more. Let's hope it stays that way!