If you have an old version of CSPro installed on your computer, you can install CSPro 7.1 without affecting the previous version. When you have finished your conversion of applications to CSPro 7.0, you can then uninstall the previous version.
Due to internal changes within CSPro 7.1, once files have been loaded in CSPro 7.1, you may no longer be able to load them in previous versions of CSPro.
If you are updating a previous version of CSPro 7.1, the installer will remove the previous version and replace it with the new version. It will not change any applications or other files that you have created.