<br />Well first of the crew is scheduled to train pretty much up to launch so cutting a week does remove a chunk of training. There is also lots of changes that occur so timelines change and need to be retrained. In fact the training starts in earnest about a year out but there is never enough time to train as much as you would like. There is also a lot of contingency training (e.g., you want to cover the case of what if there are delays and we don't get off for a month and then some of the tasks slide into the next increment and so on). The biggest issue is with Suni Williams who is the rotating astronaut. She has to train with the increment 14 crew (well no more since they are now on orbit), the 15 crew, the 12A.1 and 13A crew. Which makes training very tight. So you move it up a week that is a week fo trainign with the Inc 15 crew gone perhaps, or several EVA runs in (she is doing 1 on the flight and then 3 really, really difficult ones in the stage). But I think this can be worked out - it a trade off, what do you like less flying during year end roll over or cutting some training?