Convert I/O Device to Memory Device w/Custom Data

I am looking to make a training version of a current project, but convert all the actual field I/O devices (mostly DNPR and Modnet) to memory devices.  So I can create a custom, changeable point data and then setup mock events for operator training.

Is there an way to convert an existing IOdevice to something like this or do I need to create new devices and re-map my points?

Thanks

Andy