Rename of page does not change URL

What is the page type field setting for page name source? (sample screen shot) Are you editing the right field value?

Page Name Source Field: (Use extra field)

Page Alias Source Field: (Page name)

I guess an easier question that I have not been able to find the answer to, is what does "(Use extra field)" mean in that dropdown and where do I find that extra field in the CMS? The documentation is not specific enough and doesn't explain what that item is or does.

I just realized you wrote you are using MVC - in this case the page's URL is driven by the "URL pattern" setting of the page type - so you may want to change the value here to retrieve the page name from appropriate page field - you can use macros like {%FieldName%}

Thank you for that info. The Content Page Type URL Pattern is {% DocumentUrlPath %} so is that the correct one to use?

The oddity is that the parent page was renamed and a few of the child pages actually were renamed properly and have correct URLs but a couple of the child pages do not and still show the old page name in their URLs...but all pages still display properly in a browser. I am trying to figure out why only some of the children pages got the new parent page name and not all of them.

DocumentURLPath column is for portal engine pages. This isn't really a good column to use. If you want to reflect the page names, you should be using values maybe form CMS_Tree table, like NodeAliasPath or, if you have multilingual site and want to have the URLs also "translated", then I would use DocumentNamePath from CMS_Document table. Maybe with DocumentName combination

Well, to close this issue off, I went into Kentico database and searched for those dozen pages that were misnamed and edited the CMS_Document table and updated the DocumentNamePath and DocumentUrlPath columns and everything is now correct. Just one of those oddities in the Kentico CMS I guess...