Absolutely correct. You can add Robert Maclennan* (who was an MP for ages) and Ian Wrigglesworth (who I admit to checking) to the list. There may have been a couple more.You never knew the 'fact' because it ain't true! Many did lose their seats, of course, but some didn't e.g. off the top of my head David Owen and John Cartwright. Many LABOUR MPs lost their seats to Tories in the same election, which Margaret Thatcher fought on a 'patriotic, anti-Argentinian' ticket. Prior to that general election Roy Jenkins and Shirley Williams, two of the original Gang of Four, had put themselves forward in by-elections and won. History lesson over, all done without the 'aid' of Wikipedia!
EDIT:
Confirmation of above
* https://www.libdems.org.uk/bob_maclennan, https://www.libdems.org.uk/ian_wrigglesworth