Duplicated pages retaining original destination

I have duplicated pages and links and some of these have retained their previous information:

The link to the following page:
/goversion-help-sheets

Directs users to the page it was duplicated from:
/gopublish-enterprise-help-sheets

I’ve cleared my browser history from the past week but the links still takes visitors to the wrong page. there are a handful of internal links that are performing in the same way.

Thanks.

Here is my site Read-Only: LINK
(how to share your site Read-Only link)