Modifying a pick list field (again)

Modifying a pick list field (again)

Hi,

I need to modify a pick list field and want to make sure I don't stuff it up.  I didn't use the 'replace' capability last time and caused myself some problems.

We currently have the following values for the Priority field:
  • critical
  • very important
  • important (default)
  • minor
We need to consolidate this picklist to better align it with another internal system we use but I'm not confident of the impact it will have on existing tickets (ideally we want existing tickets to be unaltered by the change).  We need to modify the pick list options to be:
  • critical
  • major
  • minor
Can you advise on how I should implement this change and what the impact will be on existing tickets?

Thanks,
Scott