I got unknown prop names when trying to convert the bar interior, so either it’s using some new props we don’t have or the converter is outdated. (It’s not a spooner map, so I can’t convert it using CodeWalker)
The downtown apartment I managed to convert, but the mapmaker for some reason used automatic gate props for all the walls, and when you convert to a ymap those move when the player is nearby.
Your best bet for the Downtown Apartment is to load it using an object loader that supports spooner/menyoo. Like this one