Coming from a 2016 15" MBP.
Nah, I figured I'd just transfer everything over to my new MBA, primarily because I'm trading in my old MBP. The migration is super easy, kind of like when setting up a new phone. During the setup process, it asks if you want to migrate data over from a time machine backup, another Mac, or a windows computer, then you select that, connect the source, and follow the directions. I plugged a USB-C cable from my old MBP to my new MBA and it took about 30 or so minutes to migrate 240GB.
Have no idea about boot camp because I don't use it. I'd look it up.