Trying to clean up a few figures of mine, would like to delete some parameter (dials) that I don't use, before adding to library. So I click on the little arrow (>) at the right of the parameter to select 'delete morph'. But some parameters have that option grayed out.

This can't have anything to do with dependent parameters, as I created a new master parameter with no dependent parameters in there and I still could not delete it. Doesn't have anything to do with a parameters master parameters either (ruled out in testing)..

Does anyone know why some parameters (including user created master parameters) just can't be deleted? And if there is any way round this.

Thanks (poser pro 2010).