Sorry, I guess this might sound a little silly but I want to make sure so I don't end up messing up in the future -

When the names are forgotten and a character is interacting with a cast mate, do they just know the castmate's replaced name? Do they forget their name altogether, but still know the person? I'm not sure if that makes sense or not, so as an example...

Luke runs into Asch - Luke is Lukas and Asch is Cinder - so does he know him as Cinder or does he not know his name at all, while feeling familiarity towards him?

Sorry and thank you mods!