A store moved its catalogue to Shopify. Every product was checked against the old one before launch.

The shop had decided to move from WooCommerce to Shopify, and had a launch date. The catalogue held about 250 products, many with sizes and colours. The owner's worry was not the upload itself. It was what would be lost or mangled on the way: a size that became a separate product, a price that moved, pictures that never arrived.

There was a second worry. Customers and search engines know the shop's products by their old addresses, and every one of those would stop working on launch day unless each pointed somewhere new.

A catalogue move is more than one upload. The products have to be reshaped for Shopify, the import has to be tested before it touches the real shop, old addresses need somewhere to go, and the first live products have to be compared with the source, or the mistakes reach customers on launch day.

So we worked in that order. We read the shop's export and agreed the scope and a fixed price in writing. We built a mapping sheet, the product file Shopify reads and a file of redirects, and noted every place where the two platforms differ and a decision was needed. We proved all of it on a test store before the real one was involved.

These had to pass before we asked for sign-off.

• The live Shopify store has the same number of products and variants as the old shop, apart from items the owner chose to leave out.
• Twenty sampled products, including every product with options, match the old shop in title, options, code, price and picture count.
• The redirect results the owner recorded for the agreed old addresses show the intended new product each time.
• Each launch check the owner chose has a recorded result.

The owner received the mapping sheet, the product file, the redirect file, the test store comparison and the live comparison, a short list of the products that needed a decision and what was chosen, and a launch checklist covering redirects, stock, discounts and recovery emails as agreed.

The shop launched on its date. A handful of products needed a second, corrected file after the live comparison, which we sent the same day.

• We did not move customers, past orders, reviews, gift cards or coupon codes.
• We did not design the new shop's theme or set up apps, payments or tax.
• The owner ran the live import under their own account, using our steps.
• We made no promise about search rankings, and moving the domain was outside the job.