CST 2010 Microstripes Import issue

Hello guys,
Let's say that I have an opened project with manual mesh refinement. If I decide to import another project with its own manual mesh refinement into the present one - the mesh of the imported model will be lost. And this is a problem because sometimes the manual mesh is really critical and if it's not done it the correct way the entire simulation could be ruined.
Is there a way for applying the imported mesh on top of the present mesh settings?
Thank you!
Stiliyan

I think its not possible. Since even we import a cad model which designed by CST Microwave Studio, the history and other details are not imported.