When I am importing products in the site, every slug is stripped from Bulgarian characters, even if I import the product in the Bulgarian table and the language in importing file of CSV is Bulgarian.
In Global configuration I have set SEF URL's to Yes, Use URL Rewrite to Yes, and Add Suffix to URL also to Yes. Unicode Aliases is set to No.
Joomla 3.7.5 | Virtuemart 3.2.2 | CSVI Pro 7.2.3 - this site is in Bulgarian and when importing a product the alias is stripped down to only the latin characters. If there is a bulgarian letter it get stripped. I learned my lesson from a previous problem with one Greek site and all of my products are in the Bulgarian tables, but the slug is not transliterated. And in addition of that when I search for this product in search from the frontend it does not show up, but I can see it, it is right there when I check the category. I do not know if this is related to CSV. So I am lost after one day of fighting this

I will greatly appreciate your help.
Best regards,
Hrissy