If you made changes directly on your Pronto that you have not uploaded to your PC, you will need to upload your configuration first.

If you made your changes using ProntoProEdit, thenjust open your PCF.

Expand the Home device
Double click on the page called "Control".
If this is the page you want to change:
Double click on the Lights button, to opn its Properties
Click on the Actions tb
This should have one action called "Jump to Lights - Lights"
If it does not
Click the button labelled "Jump"
Expand the device called "Lights"
Click on the page called "Lights"
Click OK