Best way to update SEO fields on existing HikaShop products?

Hi Nicolas,

We are considering a semi-automated SEO workflow for selected HikaShop products and would like to know the safest technical approach.

The idea would be:

1. Export a small set of existing products.
2. Process and prepare approved SEO/content changes externally.
3. Re-import or update only specific fields for those same products.

Main questions:

* What is the best option for this workflow: CSV import/export, Mass Actions, API/MCP, or a combination?
* Can we export only a selected set of products instead of the full catalog?
* Can we update only specific fields of existing products without affecting the rest of the product data?
* Which stable identifier do you recommend for matching existing products during updates: `product_id`, `product_code`, alias, or something else?
* Are there any important limitations or risks with variants in this kind of export/update workflow?
* If API/MCP is available, is it stable enough for controlled updates of SEO/content fields on existing products?

The fields we are mainly interested in are:

* product name
* meta title
* meta description
* main product description/content

We plan to test this first on a staging site and only apply approved changes manually or semi-automatically afterward.

From your experience, where would you recommend we start?

Thanks.