I need my current Prestashop 1.6 store moved to Prestashop 8 without losing any business-critical data. The migration must include: • Every order, customer record, and address • All product information, variations, attribute sets, and combinations • Every image, attachment, and file reference linked correctly in the new catalog Please keep URL structures, tax settings, and stock levels intact so the new site continues to run seamlessly once DNS is switched. I will supply full server access for both the source and target environments and can pause live orders during the final cut-over window you specify. Testing on a staging copy, validating totals, and fixing any integrity errors before going live will be part of the scope. If you have proven experience upgrading large Prestashop stores—especially from 1.6 to 8—let me know the tools or scripts you prefer, any typical hurdles you anticipate, and the timeline you need to complete a clean, verifiable migration.