HI Adrian:
That method will work well as long as you want to copy all three voices into the other registration. However, if you want to copy just one voice, or maybe copy R2 from one registration to R1 in a different registration or any other combination, you can do that with YRM.
You the Load Registration Bank, to open the target bank of registrations.
Click Registration Builder, then Add Banks to open the source bank of registrations.
Click the registration line in the target box.
Click the registration line the the source box.
With both highlighted, click the button Copy Settings.
Choose the voice you want to replace by checking one of the left boxes, then select the voice to copy in the right box.
Click the Process button to execute the copy.
Once you've done your copy, you click the Save/Convert button to save the changes you made.
With the Registration Builder, you can copy voices/styles from any number of other banks into the target bank/button by adding other banks using the Add Banks button.
Hope this helps.
Cheers,
Murray