Keep files Nginx conf issue

If you follow the instructions on this page http://docs.engineyard.com/configuration-keep-files.html to create a keep file for your application.conf then it results in a conflict with the nginx config.

The server will try to load both the keep.app.conf as well as app.conf.

I just changed the nginx.conf to load app.conf instead of *.conf but it would be good to have a better solution.