Hi.
I want to keep alias dublicate, but I can`t find function where dublicate auto rename.
Etc.
I have article like "thisarticle", when I create new article with alias "thisarticle", alias auto changing to "thisarticle-2". But I want keep both "thisarticle" alias. So, this is possible?

I don't think this is possible, because the alias is being used to construct the article SEF url.
So, when two articles have the same alias, it will be confusing to determine which article is related to the SEF url!