Until recently I have travelled to Russia frequently - on regular tourist visas in my USA passport. The last time I travelled, the Embassy issued my visa for wrong dates (in my application I requested dates 5-15 October, but they issued it for 5-15 November the same year). I notified them of the mistake and they issued a new visa for the right dates and cancelled the first one - i.e. there's a stamp now on the old visa stating "Cancelled without prejudice".
How should I report this cancelled visa when I apply for a Russian visa next time? Specifically, there's a question on the application form, "Have you ever had Russian visa cancelled or revoked?"
EDIT: To clarify, I am not asking whether to report this cancellation, but rather how to report it.