Hello NesaM,
As of today in Airwave 8.2.8.1, Airwave will always use the scp creds, you configured once in the AMP Cli menu to configure the Automatic transfer, will continue to use it every time it tries to put the file, meaning, every night, it will use the same creds, to login to the remote server, and put <file name>. Back in older versions of airwave, when you had root access, you could have done password less authentication, but right now, it uses the password to login everytime.