From a user "I could successfully create user through AddUser.php, upload data through import.php, connect it to JOSM and GET the data, but I couldn't find how to Authenticate it with JOSM for editing and uploading back (I tried Basic Auth but return is 401 - Auth failed)."
From a user "I could successfully create user through AddUser.php, upload data through import.php, connect it to JOSM and GET the data, but I couldn't find how to Authenticate it with JOSM for editing and uploading back (I tried Basic Auth but return is 401 - Auth failed)."