.cp and .cp.bak file extensions

Hello,

I recently transitioned to Captivate 7.0.  I have a Captivate project I created in an earlier version of Captivate, perhaps 4 or 5.  I have two files for this project, one with a .cp file extension and one with a .cp.bak file extension.  I am not able to open either with Captivate 7.0.  Do you know how I can access this project?

Thank you,

Sarah