Stats transfer from Xbox 360 to Xbox One

I originally purchase BF4 on launch day on the 360. I was able to transfer my stats later on to the One edition without a problem. The issue I have is that I play the game on both consoles still and my stats for the One edition have not kept up with my 360 save. Is there a way I can update my One save to match my 360 stats or was this a one time only process and am I flat out of luck?