The greyed out properties are hidden - you have Show Hidden Properties on in the pane's option menu. That means they are not intended to be used directly, though that wouldn't usually stop them entirely. What morphs are they? If they are pose controls that drove special bones (for tails in hair, perhaps, since you mention OOT) and you have used AutoFit to move the item to a different figure then the bones they were driving will have gone. With hair it may be better not to fit but simply to parent and adjust the scale and translation, or user a Smoothing Modifier with translation, to get it snug