This only applies to a refund for an unused period on a ticket, not on
a change in zones. Changes in zones are done pro-rata for the
remaining period of the annual ticket and as I said about are
available until only 1 month is less.

You are correct if you are completely stopping use of the season, then
there is no refund after 10 1/2 months, but this was not the question
that the OP asked.

So if one wishes to cancel an annual ticket the best option would be to
exchange it for the cheapest possible ticket before applying for a
refund. Interesting.