When you configured the Lutron RA2 Select lighting devices did you use a Lutron software and if so are you able to create a Lutron XML file of the configuration? If so in ElkRP2 under Automation and Lighting right-click on Lighting and Import Lighting Data select Lutron XML database and import the file. This should pull in the new devices into ElkRP2 and then you can Send To Control. Also under Lighting the Format for each device should be “Serial Port Expander” and the OPT option should not be checked.