How to edit existing add-on pages at http://addons.oscommerce.com? in General Add-Ons Support Posted December 7, 2015 You can not edit/remove add-ons, you can only add in new packages. The old entries and files remain available for download as an archive for those who wish to checkout old versions. If there are major changes you might instead want to add it as a separate new add-on. If you have other needs and can not get hold of the site webmaster, you might try contacting one of the moderators and ask about information/assistance.