I am running a Centos Linux server which I connect to using Putty/SSH with x11 forwarding enabled and an X11 server (Xming) running on the client machine...I am able to open GUI applications from my Putty session on the client machine but when I end the x11 session the application close and any data is lost...I have previously seen applications 'grabbed' or exported from a local UNIX server to an ssh client running X11 forwarding and once the user was done - they exported the GUI application back to the server where it continued to run...This allowed a form of application sharing albeit with just one user running the app at a time but it was very useful...This was on Solaris and it was a while back... is this possible on Centos Linux and if so, can you give any examples of how this works?  
Import/Export running GUI applications between localhost and SSH client running x11 forwarding?
ssh;x11;xforwarding