cannot edit conditional option name

I am not able to edit a conditional option name. the change will not stick.

Using PS3 version 3.01.

Steps to recreate issue:

• Create new product with box checked to add options.
  
• Add a *main* option with a few values
  
• For one of these advanced option values we add a conditional option.
  
• we enter a few values for this conditional option
  
• we decide we did not like the name of this conditional option and wish to edit it.
  
• click on edit beside the option name and get the entry box:Editing Option : Conditional Option
  
• edit the option and click on rename

Results

• nothing happens - the name of the option remains unchanged.

I'm afraid this could be a major issue if I want to change this later I would have to delete the option and would lose all related sales data.
anyone know what to do?

Nancy