I wanted to create a new dictionary based on the restricted dictionary and remove the sales transaction tab.
At the moment there isn't a copy dictionary option so I had to create a new dictionary and remove all the fields that are not available on the restricted dictionary as well as the additional fields not required for the new dictionary that was created.
Being able to copy an existing dictionary would mean:
New dictionaries can be created quicker
There will be less errors and more consistency when creating a new dictionary