[#2849] - Setting ProfileAttributes in an ExternalUserProcessor has not effect

I have implemented the method processExternalUser() and am filling user data using the getters and setters of the user object. Also I am trying to fill the User Profile Attributes using the following code:

ProfileAttributeImpl attrib = new ProfileAttributeImpl();
attrib.setAttrName("name1");
attrib.setAttrValue("value1");
List l = new ArrayList();
l.add(attrib);
user.setAttributes(l);

The attributes are not saved while all of the rest of the attributes are saved:

user.setFullName("...");
user.setEmailAddress("...");