Whin Ansys file converted to Abaqus file in Hypermesh - Problem occured

I have a .cdb file which is an ANSYS file, created from Hypermesh. The same contains orthotropic material properties. When I tried to convert .cdb to inp which is an abaqus format, the Orthotropic material properties changed to isotropic property showing properties only in one plane. Why is it happening so?. Is there any way to get the orthotropic properties as it is, when changing from Ansys to Abaqus profile?