Here you may define preferences for input images with a clipping path.
Clipping path options
Where: Channel | Pixel Edit | Clipping Path tab
Stroke clipping path: When enabled, anything outside the clipping path will be discarded and replaced with a canvas. The canvas color can be set by clicking on Set background color. With GIF and PNG24 files you have the option to make the background transparent by choosing that option.
Use first working path if clipping path is missing: – If the input image has no defined clipping path, the first working path will be promoted to clipping path.