Logseq db import guide

Is there a guide or something in how to import a Markdown graph to the db version? For example, it says “import specific tags”, but, what does “import” mean? What is a tag? In og version it was just a “different” way of referencing a page, instead of saying Today’s [[meeting]] you could say Today’s #meeting

What is “Import additional tags from property values”? And “import tag parents from property values”?

I’d like to find a guide that thoroughly explains all these features and how to configure them.

For example, I have lots of contacts with this “header”:

John Doe.md:

page-type:: [[Researcher]]
alias:: [[@Johnny UCM]]
lab:: [[JD LAB]]

Is it possible to import the page-type:: [[Researcher]] as a tag and keep the properties? (Even If I have to do some preprocessing with an script).

Oh I managed to do it by setting “import additional tags from property values = page-type”

But, how do I make aliases work?

Ok, aliases work but I thought they weren’t working because when I clicked the @Jonny UCM page from the alias property it opened a new, empty page. But from any other page it works. It was just a bug.