Transfer registered users from one firebase app to another

Question

My firebase app has a list of registered users. These were created with Email & Password Authentication.

I want to transfer the firebase data and the list of users t

Answer 1

The answer above doesn't work by it self as all the passwords from the previous project will have different password hashes. You need to specify the old hash (exporting project) when you import the new users.

Click on this menu item and all of the settings you need for doing the firebase auth:import command will show up. Here's what I see:

hash_config {
  algorithm: SCRYPT,
  base64_signer_key: ,
  base64_salt_separator: ,
  rounds: 8,
  mem_cost: 14,
}

I can then do the command successfully

firebase auth:import ./users.json --hash-algo=scrypt --rounds=8 --mem-cost=14 --hash-key= --salt-separator=

How to set hash-key option for auth:import after default auth:export in firebase?