Prestashop Move and Merge Attribute Values Module: fix duplicates without breaking combinations

• Move values between groups (for example, the XXL size created under Color) while keeping the stock, prices, images and references of your combinations.
• Detects conflicts before moving and never leaves a combination with two values from the same group.
• Finds only the true duplicates (capitalisation, accents, spaces) and merges them. Combinations that end up identical are merged and their stock added together.
• Manually merge values that mean the same thing («Navy» and «Dark blue»).
• Bulk renaming: find and replace, upper/lower case and whitespace clean-up, per language.
• Sort values alphabetically, numerically, by size (XS…XXL) or by drag and drop.
• Preview of everything that changes and an undo button (keeps the last 20 operations).
• Preserves existing orders, specific prices, suppliers, packs and the faceted search filter.
• Compatible with PrestaShop 1.7 to 9, multistore and PHP 7.1 to 8.3.

Attributes end up in a mess: an «XXL» size created under Color, «Red», «red» and «Red » as three different values, names in capital letters... PrestaShop does not let you move a value to another group, and deleting it breaks the combinations that use it.

Move and Merge Attribute Values fixes all this from a single page under Catalog > Attributes & Features. It shows a preview of every change and saves a backup so you can undo it.