I live an hour from Conrad Johnson by car. I once brought my MF2100 amp there because one channel went out. I was the second owner. I provided them with no ownership information, nor did they ask for any. They replaced a couple fuses and did a complete system check of the amp to make sure it was up to specifications, and to make sure nothing faulty cause the fuses to blow. They shipped it back to my house (in a new box!) so I would not have to drive over (weekday) to pick it up. The bill for this: $0.00
I doubt they offer this as a free service. They probably checked the serial number to determine the age and since it was within the warranty period, they did not charge me. The written policy of no warranty transfers is probably to limit their potential liability, however depending on the situation will fix things without too much fuss.
When you see factory "refurbished" items for sale at various auction sites like Ubid.com it ususally comes with a lesser warranty (90 days instead of a couple years). Some of these items are new. They sell them on clearance / closeout as refurbished so they can increase their profits on the fire sale by shortening warranty period.