Qustions regarding Export / Import before buying

Questions regarding Universal Export / Import before buying

Hey all
I am thinking of buying the Universal export and import modules. Just before I do this, I would like to confirm:

I can export all my products, change e.g. the weight, and then import again?
When importing, will it overright everything that is already there? Or can I also just export name of product and weight, then change the weight and then import again, just name and weight, and the rest will still be there?

How are the experiences with these two modules? Importing and overwriting sounds a bit dangerous to me :-). My shop is in German and English, is this a problem?

https://www.bodhran-info.de/en/shop/about-the-shop

Thanks
Rolf

---

Aw: Qustions regarding Export / Import before buying

Yes.
Only need export also field "id" for assign product.

2. Import / export supported multi language

---