Does Export & Import in XML creates new products or update the existing ones?

Hello!

I have 14235 products on my web-site now.

What I need is to add some text at the end of each product title. All other product settings, IDs, SEOs and other data must remain as it is now.

If I export all products in XML and then change the product titles and import it back, will it do what I need?

Thanks.

You can't import XML, you can only export it.  You can export and import Excel (xlsx).  To update existing products, they must have a SKU.