Uhh, it's like, it places all those small models on the map except those big ones which are in contest browser still. Dunno why, tried refreshing the view as you said but it didn't fix anything. Worth to add is the fact, that it happens only to the newer cs:go maps, such as Inferno, but also Cache which is pretty old map, but I noticed something weird bout it. Both inferno and cache are having different type of write or something like that, cause they do not have the normal map compression and then materials + models in the game folder, I have to decompile them with embed files so the file structure is different. I gotta load materials separately cause I get them from the .bsp file after decompiling.
Weird. There are known problems with decompilers writing broken vmf files, though.
Have you tried opening your decompiled maps in Hammer, see if they work there and save them before trying to import them in HammUEr again?
Just checked with an inferno vmf from here, and that imports (mostly) fine, so maybe use those instead of your own decompiles?