Updating Navigation Hotspots
When checked, this option updates any navigation hotspots that linked to specified 360 to now link to the new 360 you specify.
This is useful for when you are replacing an image with a new image. In addition to moving or copying over any hotspots and annotations, you will want to update any navigation hotpots that were pointing to the old image to point to the new image.
This option does that for you automatically, without you having to manually update each one.