It’s worth refreshing all your Finder Aliases before copying or cloning a volume to update their link info. Here’s a free tool to do that and more: Alifix.
Don’t just throw it in a box and send it off: what happens if its internal storage is replaced or wiped? What about protecting sensitive files? Does a T2 chip make this difficult?
What if you can’t or don’t want to use Migration Assistant to move your files from your old to a new Mac? Here it can get more complicated. Tips and solutions to help.
Does APFS currently support hard disks, Fusion Drives, and other forms of storage beyond SSDs? The devil is in the detail.
Do third-party disk tools work with Fusion Drives, or are you stuck with just Disk Utility?
How did some of my old disks and folders get to have ‘custom access’, and how can I fix that?