Can Edius flip clips, so that actors look left to right instead of right to left you ask? Is there any editing software that can? I think you can with a mirror video filter.
You can flip video clips horizontally with both Edius 3.61 and 4. Just drag that mirror filter from video effects box on to your clip in that time line. Double click on that little mirror icon that shows up in an information box.
You will see that a horizontal flipping needs to be checked to enable it. These instructions were for Edius 3.61 but will work for Edius 4.