This is helpful advice, but I'm a little confused given Medium's No Duplicate rule, which states that you cannot delete an article and then republish it. You are deleting part of an article and then republishing the deleted part. I wrote an article titled Questions About Medium’s No-Duplicate Rule (at https://medium.com/writers-blokke/questions-about-mediums-no-duplicate-rule-695e83c2cd4a?sk=4118d100910d8437cdaa787e4cb119d8). The article laid out what is known about duplication and asked for more information. You might have that information. If you do, can you write something with specific examples showing how much change is needed to an article to avoid violating the rule?