Hi,
I modified the URL path for some of my posts, and now each of those posts shows twice in my blog (once with the original URL, and once with the new URL path I set). I deleted duplicate posts from the timeline and from the Posts page, but they still show twice on the blog.
Can anyone help me with that? Thank you.
Have you done a full rebuild?
I had not. Finding the rebuild button wasn’t easy, but I found it and that solved the issue. I guess I am used at WordPress, and changes here are more like Movable Type? 
Thanks so much for the help!
The underlying tech is a static site builder— to make the services faster, it mostly does partial builds/there’s a fair bit of caching. Sometimes you’ll want a full rebuild essentially to invalidate the cache faster than the normal roll off conditions.