Henry
Edit the UCF so you only see this ie. only the ByLevelColor can be edited.
MS_LEVEL_EDIT_ATTRIBUTE_LIST = ByLevelColor
open the reference file place 2 lines on 2 different levels with ByLevel colour.
Open the file that has these referenced in and try and edit them in level Manager
If it doesn't work have a look in the message centre (bottom of the MS interface) do you get any warnings.
Edit the UCF so you only see this ie. only the ByLevelColor can be edited.
MS_LEVEL_EDIT_ATTRIBUTE_LIST = ByLevelColor
open the reference file place 2 lines on 2 different levels with ByLevel colour.
Open the file that has these referenced in and try and edit them in level Manager
If it doesn't work have a look in the message centre (bottom of the MS interface) do you get any warnings.