If you change to a new computer and have saved templates for your slideshows, you can transfer the templates to your new machine very easy.
Right-click on a template you saved in the left column of the Web module, and select “Export.” Save the template, then transfer it to your new computer. Then on your new computer, install the SlideShowPro for Lightroom plugin, then right click on the “User Templates” folder in the same left column. Select “Import,” navigate to the template you exported, and select.