wonderware profibus GSD upate

I am trying to update the profibus GSD file on my system. Wonderware is controlling the profibus configuration. I have updated the profibus configuration with the new GSD file and it shows up if I add a new slave. But I need to get the existing slaves 2 ET200S I/O blocks on the new GSD files. I would like to do this without loosing all the configurations and setups of the installed modules. ie variable names and module settings.

I hope that you can understand this.

Thanks in advance

Mark