Updating existing published RISE course

Hello, I'm looking for some guidance on updating an existing RISE course that is hosted in Blackboard Classic. We want to update the course without losing the currrent gradebook results. What is the best way to go about this. Apologies as I am struggling to find the guidance on the RISE support pages.

We have some users that have finished and others part finsihed. Also, the course is based on completion and the two changes are simple text and url changes in the content. 

Thanks for any advice.