On the ZC site we can see this:

Detailed upgrade instructions that help you retain your customizations while upgrading to new features, can be found in your ZIP file under the /docs/2.Readme-Upgrade.html file and also in this related FAQ article

A. ALERT: If you want to preserve your CUSTOMIZATIONS, use these instructions INSTEAD: upgrading and preserving customizations at http://www.zen-cart.com/content.php?140

The link for the above-mentioned instructions instead: http://www.zen-cart.com/index.php?article=108 DOES NOT WORK

Would someone please provide the correct link for this article about preserving customizations etc.????

Thank you, Tom