__Always make a backup first__. A lot of effort was put into creating reliable installation and upgrade processes and making them as easy and quick as possible. However, there are many different server setups, some of which might cause a problem.
! Your data
-The following files and directories contain dynamically stored data - in other words, data that you or your users created. Copy these files or directories to your new installation:
+The following files and directories [http://www.resumesplanet.com|resume service] contain dynamically stored data - in other words, data that you or your users created. Copy these files or directories to your new installation: