Hi Andrew,
Welcome to BuddyDev.

Thank you for posting the question.

Though the javascript approach is fine, and I have also posted similar snippets earlier on our forum, Let us see another easy approach today.

Instead of doing things in javascript, Let us hide the fields you don’t need using css. I hope, yopu can do that step without my help(using display:none in css)

Now, Here is a fail-proof method. You will need to put this snippet in your bp-custom.php

function buddydev_check_update_signup_fields() {

    //you can access the superglobal $_POST and set values in it too
    //for example
    $_POST['field_1140'] = $_POST['field_960'];

    //and so on

}
add_action( 'bp_signup_pre_validate', 'buddydev_check_update_signup_fields' );

Please give it a try and let me know if this works or not?

Thank you
Brajesh

Hi Andrew,
I believe it is not the above code but the validation that is failing. The member type plugin uses lower case values for the names.

Try changing this

 $_POST['field_1140'] = $_POST['field_960'];

to

 $_POST['field_1140'] = strtolower( $_POST['field_960'] );

Most probably that should do it. Otherwise, I will advise to check for the values and see if they are same as the key of the member type.

Hi Andrew,
Can you please point me to your registration page. I will be in a much better position to help you if I can see the fields.

Thank you
Brajesh

Hi Andrew,
Now, I can see the problem.

Field 1140 is not part of your registration forms, so BuddyPress is not saving it even if we put it in the post fields. Earlier, I assumed that you had hidden this field using css and that’s why i suggested the above suggestion.

For you, a better option will be using the following code

function buddydev_update_related_field( $user_id ) {
	
	
	//get the field value
	
	$field_data = xprofile_get_field_data(960, $user_id );
	
	if ( ! empty( $field_data ) ) {
		
		xprofile_set_field_data( 1140, $user_id, $field_data );
	}
	
}
add_action( 'bp_core_activated_user', 'buddydev_update_related_field' );

On activation, we fetch and update the field. Please test it and let me know if it works or not?

Thank you
Brajesh

Thank you Andrew,
I am happy it is resolved now.

Regards
Brajesh