Todd said (as he cant seem to find his log-in anymore),
"Most of it is that the records that are retired, but there are also some of the classes themselves that no one will ever be able to run on as they do not and never did actually exist.
What happened (in regards to these "non-existent classes) was that they unkowingly (by the entrants and the organization both) got by an early version of the ECTA database for a couple years or so, and were later retired when found to be incorrect or non-existent records. They were rightfully kept as retired records along with the others as the entrants did pay their money, make their passes and surpass the required speeds. It was the right move by the organization and agreed fair by the effected members.
The best thing to do to find class availability is to go to the 2010 ECTA rule book, page 76, Section 7, Article D, paying close attention to 7.D.4
A wise racer will pay the most attention to the last sentence in that article."
As always, feel free to call Todd at the phone number in the ruleboook or email address on the ECTA website (as the rulebook email address is incorrect) for further verification, or help in answering any of your questions related to ECTA or LTA motorcycle entries.
Deb