The manual helps, however, I doubt it is updated properly...this has been a small issue. It does have some poser tips in transposer.pdf and I think the other one. The change in 5.03 added this as part of the GI transparency issues that had been happening, then they corrected the overlighting in 5.04 When you don't use GI you obviously don't need the GI option (it will be greyed out).

No need to think outside the box....
    Just make it invisible.