Looking for someone to upgrade existing site from osCommerce v2.2RC2a to most recent version of osCommerce v2.3.4 with Bootstrap 3 and PHP7.
Need to keep same functionality, addons, photos, categories, layout, design, etc. as it is and all databases like customers, orders, products,.. etc.
Need to keep all page content
Can work directly on our backup server first, then coordinate a time for upgrading database so that any new orders/customers from live site would be included in new version when goes live