ctatarau

I tried disabling the plugins (but it worked earlier anyway), switching to the twentytwenty theme and renaming bp-custom.php, and it did not work. My workaround: create a new search form, add all fields, publish, delete the old form which I wanted to change. For now it is OK this way.
The question for debugging is: where does “message 4” come from? I found this place:

bps-start.php

add_filter ('post_updated_messages', 'bps_updated_messages');
function bps_updated_messages ($messages)
{
	$messages['bps_form'] = array
	(
		 0 => 'message 0',
		 1 => __('Form updated.', 'bp-profile-search'),
		 2 => 'message 2',
		 3 => 'message 3',
		 4 => 'message 4',
		 5 => 'message 5',
		 6 => __('Form created.', 'bp-profile-search'),
		 7 => 'message 7',
		 8 => 'message 8',
		 9 => 'message 9',
		10 => __('Form draft updated.', 'bp-profile-search'),
	);
	return $messages;
}

Thanks a lot, Rumesh, it does help!