Having a personal backup saves you the embarrassment of groveling to the system administrator to see if he might be able to find your files within last night's system backup.
Inside this zip file, you will see an XML document called "cmRepos" and a folder for each of your saved MRE Domains. The cmRepos document contains additional information that WebFOCUS needs to import this change management package back into another environment.
The MRE Domain folder contains a subfolder called "apps" which contains all of your WebFOCUS application code.
Of course, you may want to make a quick backup of the bad code first. Hopefully, you can use something and not have to entirely recreate the work you lost by reverting to the backup version. Still, this is a better option than being under stress to correct an existing problem on the development server (by the way, you would never develop on the production server, right?).