Is there any way to reuse the Job Function Lookup code?

Summary:

How can I reuse the Job Function Lookup code with a different Meaning?

Content (required):

We have a scenario where we need to make a change to the Job Functions. We have a selection already set up however we want to use one of the Lookup codes with a different meaning. I have tried to end date and create a new one, disable one and create a new one and every time it tells me that the Look up has already been used.

Example:

Job Function Lookup is A1, Job Function Meaning is A one. I want a new Job Function with the Lookup A1 and Job Function Meaning as Another One.