CLI / Terminal Access

Install CLI: npm install -g @shopify/cli @shopify/theme

Login: shopify login --store your-store.myshopify.com

Start dev server: shopify theme dev

Local: http://127.0.0.1:9292

Admin Editor (Hot Reload): Link provided in terminal

Run shopify theme pull to download remote theme files

Select the theme you want to back up from the list

Commit these files to Git for version control (best practice)

Run shopify theme push to upload local files

Select the target theme (can be a new unpublished theme to be safe)

This effectively restores your local state to the cloud

If clients make changes in the customizer, sync them back

Run shopify theme pull to update local settings_data.json

Use shopify theme push to a new store (requires login to new store)

Products: Go to Shopify Admin > Products. Click 'Export' at the top right. Select 'All products' and 'CSV for Excel, Numbers...'. Click 'Export products'. The CSV will be emailed to you.

Customers: Go to Shopify Admin > Customers. Click 'Export'. Select 'All customers'. Click 'Export customers'.

Importing: Use the 'Import' button on the respective pages in the destination store to upload these CSV files.

Matrixify (formerly Excelify): A powerful app for bulk import/export. Use it for complex data like Orders, Blog Posts, Collections, and Redirects that native CSVs don't cover well. It allows you to map fields and handle large datasets.

Transporter: Shopify's official app for Shopify Plus. It is designed for high-volume migrations from other platforms (Magento, BigCommerce) and handles data mapping logic via a command-line tool or CSVs.

Recommendation: Use Matrixify for most store-to-store migrations. Use Transporter if you are on Shopify Plus migrating from another platform.