Last year I queried them on my missing categories of C1 and C1+E (large vans up to 7.5t) - was told I'd have to speak to the medical department as they'd removed said categories back in 1997 after I had an unexplained blackout.
So, after misplacing my driving licence recently I had to contact the DVLA for a replacement (bear in mind at this point that I passed my car test in 1994...
I got the replacement at the weekend; I'm still missing the C1 & C1E but I've mysteriously gained a new one...
Apparently I can, with no prior experience of anything aside from a year on a Yamaha passola (49cc rev'n'go) back in '89, ride any motorcycle!
I've heard of people losing motorbike categories before... never heard of anyone gaining them
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Just a y2k FSR with some modern bits