convert from cimplicity 6.1 to cimplicity 8.2

Hi all,

I have few .Cim files which are made in cimplicity 6.1 software. Now i have to convert those .cim files to cimplicity 8.2 software. I dont have the .gef project file.

Kindly tell me how to upgrade?

Note:Cimplicity 6.1 is on windows xp and 8.2 is on windows 7.