Most people moving house worry about the sofa and the fragile boxes. I worried about a 24-port switch and the fact that nothing in my cupboard is plugged in where common sense would suggest.
The lesson, learned the hard way once before, is to label everything before you unplug it. I went round with a roll of masking tape and a marker, tagging each cable at both ends and photographing the back of the rack from three angles. It feels paranoid right up until the moment you are kneeling on a strange floor in a new house, surrounded by identical black cables, trying to remember which one carries the link to the ONT.
The hardware survived the van. The patience nearly did not. Everything came up on the first boot in the new place, which felt like an undeserved gift, and I have decided to take the win and not investigate why I was so lucky.