Do map packs not carry over from 360 to xb1?

All my stats and such carried over just fine, but when I went to download the map packs (I had separately purchased all of them besides naval strike) it wants me to buy them again. When I loaded hardline they were free downloads. I don’t know if having premium for hardline makes a difference, I don’t have premium for bf4. Has any one else had this problem? Do I really have to buy them all over? That would cost more than I paid for the whole game.

thats DRM for you … the license doesnt transfer and im sure one of the perks of premium is that you dont have to buy the DLC while you are subbed but once it ends you lose the maps

Premium ends? What? I have it for hardline and I haven’t heard anything like that. You keep the dlc forever.

how much is premium compared to buying all the DLC

im pretty sure as a one time purchase premium would be less ?
but what vanishes with premium that would make you want to keep re subbing after

What do you mean resubbing? Afaik premium is a permanent one time purchase.

wut guess im just used to premium in most games being a temporary service which you must keep buying each month to recieve the bonuses from such as xbox live