Given the complexities of workflow editing and that you cant make changes like transitions to live workflows, I deemed it prudent to ask the forum for advise...
GOAL
To replace this active workflow...
ITS: Incident Management workflow for Jira Service Management

with this inactive workflow.
Copy 2 of ITS: Incident Management workflow for Jira Service Management

My thought process is old skool, in that I thought it would be a matter of selecting an inactive workflow and pressing a copy/replace option.
Can someone tell me in a step by step process how to perform the above workflow replacement please :-)