Twinmotion

I´m having problems with exportation from revit to twinmotion. Some objects are arriving with some deslocation of where they were supposed to be. For example, I have a sink that was supposed to be inside the bathroom but instead it is in the wall previous from the bathroom, outside it. Another point that I am having problem is with the hight of some points. I have a thather that it´s ground is lowered 90cm compared to the rest of the structure. Is there any way I can only change this ground hight in twinmotion?