When I delete a user in Mac OS Sierra, I get the option to 'Save the home folder in a disk image'. Is that image portable to other Macs? Is there a restore function to create the user again on this Mac? Would the restore function work on another Mac?
Could this be your answer or atleast some help?
And if you want to move the user to the other Mac you should copy the users disk image into a USB drive and by that way copy it to the other Mac.