Reach saved content transfer

Is there a way to save a custom map to the Cloud on an Xbox One (I know there’s a way on the 360)? Or a flash drive, or from my Xbox One to the 360? (yes, One to the 360).

Your file share is a great place to put your Halo Reach files.

> 2533274996666254;2:
> Your file share is a great place to put your Halo Reach files.

File share no longer works for the past few years.

> 2533274818575073;3:
> > 2533274996666254;2:
> > Your file share is a great place to put your Halo Reach files.
>
> File share no longer works for the past few years.

That’s not true actually (only when XBL Services/Reach servers aren’t having issues). I was able to successfully upload/download maps and gametypes on my xbox one to my file share.

Edit: I just tried it shortly before I posted this.