Only the retarded lounges ask for cards if your status was reflected by the system nowadays. The number of such lounges luckily is falling rapidly, I mean even the Pulkovo lounge (LED,Russia),who I have been figthing with and teaching on oneworld rules for many years has finally stopped asking me for a card and they would even refuse to see my card if offered nowadays.

Some lounges may ask you for the plastic,but are unlikely to challenge you if you tell them you lost it/forgot it e.t.c.

If it is a contract lounge you would normally (but not always) be issued with an invitation by check in.

I lost my card and in the last 5 years I have been asked for the card in CMB (they phoned someone and let me in eventually) and JL at BKK (asked for the card,but not challenged when I said I did not have it).