Using a backup for time machine
I have to get my Macbook pro sent in for repairs. Creating a back up to load into a used iMac someone gave me. Can I use it for the iMac and to restore my Macbook pro when it comes back to me.? Just now sure if when I do a restore from timeline if it takes the data out of my external harddrive or is just making copies of it and it stays on my external WD hardrive.
MacBook Pro 13”, macOS 10.13