Is it possible to export Reality Mesh .3mx file type to .ifc file type by using IFC4 along with texture? It seems to be lost after export.
No, it seems that IFC4 class definition is not fully matured yet. Such as definition is now for triangulated faces only while more effective geometry are polygonal and constructive (CSG). So currently it is not possible to export graphics information from .3mx to .ifc is not possible in ABD.