BF6 Campaign

Hello everyone. i just finished 60% of the campaign including finding the collectibles etc. everytime i load up the campaign it starts with mission 1 and i have to do it all over again "the progress is still there tho" i still have 13/30 dog tags so that did save. my rewards and challenges also saved and it  says i finished a lot of missions. but why do i have to start all over ? im not able to play the whole campaign everytime i have to leave lol. what is this? so you have to do the FULL campaign  and if u leave at lets say mission 6 and you have to do it all over again? but it does save your progress lmao.. is this a bug or what