3DS firmware update part 2

Apparently that touted feature of being able to move save-data from the retail version to the digital version doesn't let you move them back to the physical version, and that's a pretty stupid thing to do. Also apparently there's a crashing issue with this latest firmware that lets you fix it by powering off the system, and then powering it back on holding L, R, A, and Up on the D pad. This was necessary, why?