Tryal Version

I'm delivering a storage with a tryal version, because the distributor didn't delivery the original one.
Question:

What must I do after receive the original, to install on the system, without lose any configuration and data?

Thanks

Have the customer save his settings in Main. > Misc. and select all options. Then turn off system then install USB module and remove the Demo-CD. When system is running on the USB restore settings from the Main. > Misc.