Import users incl. passwords from ASP.NET Identity V3

Hey, I am trying to import users from membership provider, which is working without issues.
Now I am trying in addition to import the users from newer identity model. I am running into issues to identify the correct algorithm to put into the json export file.
I tried several approaches to figure out the right values to put into the json file.

Per MSFT article the password hash is encrypted on SHA256, 10000 iterations and the salt key length seems to be 16.

I am using the import/export extension to import the file. There is not much information about the error. Just show that the import failed for the user.

I already read other community posts and tried several approaches without success.

Anyone else ran into same issues and can support on this?

Thanks in advance,