CCS/CC2640: .cproject file from examples are being corrupted

Part Number:CC2640

Tool/software: Code Composer Studio

I am having trouble importing the examples from BLE 2.2.2 stack into the latest CCS ( Version: 8.1.0.00011 ). When I import the 2.2.2 examples I see that the associated .cproject file looks good and code compiles. However if I modify the project properties in any way it appears that CCS is altering the .cproject files and loses important data. More often than not the "include" directory paths are removed from each project after the import. 

Is there a version of CCS which might be more stable with these examples?