I had one purchased with AF - and I did not touch this nor called anyone to request for status. However, yesterday, I received an email from AF which indicated the refund process has started and I was refunded the full amount without any action from my side. It has still has not hit my credit card yet.
However another ticket issued by KLM, initially it was reinstated, but now they have removed the 1st segment and my last segment which was operated by another airline - no further information on this ticket.

Cheers!