While performing a systematic review, I found an older almost identical review already published. Do I continue with my systematic review and update it for the new data or do I abandon my review and choose another topic?

The previously published systematic review is 3 years old. I do not believe that the new data will change the results found in this original review. Do I continue with my review and update it for the newer data or do I give up on this subject matter and choose a different topic for another systematic review? My mentor is unclear as to how to direct me. What would you suggest I do. Thank you.