I moved my entire collection of 20 or so machines 3 years ago. All the antique machines had to come out of their cabinets; I did that myself. I taped all the miscellaneous hardware to the underside of the machine or table, as appropriate, with painter's tape. Each machine was labeled with painter's tape as to which cabinet it came from. The movers put each machine in a separate box, well padded, wrapped with the plastic wrapping. The heavy machines then went into a second box that was also padded. Everything came through perfectly.
This is was a standard corporate move, not an antique specialty company.
Pam