I Got the season pass for the 360 and it transferred over to the xone no problem with dlc 2 I did it on the 360 first and then did it on the xone no issues.. I am just going to do all downloads on the 360 and then the xone . Since I haven't had any issues that way I will continue that way until there is an issue.
I bought the season pass for xbox 360 and now that I have the xbox one, I would like to get the DLC on it as well. Now my question is: If I do the free season pass upgrade to xbox one, will I still be able to download the future DLC packs 3 & 4 on my 360 at no additional cost?
Yes. You should be automatically "locked in" when you start up the ONE.
I THINK on the X ONE you have to go thru the buying process and it will say "Free" under the buying menu.
What I do is DL the maps DLC onto my 360 then shut it off and play on the ONE anyway. Its very seamless.
MAKE SURE you buy the season pass ON YOUR XBOX 360 and do NOT buy it on the ONE. (Ok leave that up for anyone else )