If you're using the Race Director results kiosk where you also have a receipt printer attached, you can continue to use this even if you score the race in RDS.  Here are the steps.

1) Before the race starts, make an export of the race in RDS -

2)  Import this into Race Director.

3)  In RDS, start up Race Day Hub.  Then, make sure that you have Auto Save for the scored events you want exposed to Race Director.

4) In Race Director, first establish the connection in Tailor -> Options.

Then, start up the results kiosk and use this setting and you're all set.  Even though RD has neither participants or results loaded, the kiosk lookup will work just fine.