Thanks. It was basically just some searching and copying & pasting (with some editing). Pretty fun, although a bit disappointing since only partially successful. I just wonder why they did not enabled those props in Warband map editor natively. They are all fully textured and majority of them also have physics object. It's a pity. Take that big stone dome-like structure. On one hand, its Outside object is available, but, on the other hand, its exact Inside counterpart is absenting. I heard (not sure if it's true) that the max amount of scene props, which can be initiated, is limited; so, maybe, they just wanted to save some spots for props potentially added by other mods subsequently…
Anyway, if someone has an idea about that native-compatibility fix, please write your suggestion. And if anyone is interested, I can share the compiled scene props list so you can test it by yourself (if that would be allowed eventually). Also, if anyone has ArmaÄŸan's e-mail, so we can contact TW directly, and ask them to patch the native-compatibility in 1.174 version, that would be nice too .