Gravity Flow - Step Assignee - Bypass "re-assignment" with email change

functions.php

<?php

add_filter( 'gravityflow_step_assignees', 'bypass_step_assignee_on_email_change', 10, 2 );
function bypass_step_assignee_on_email_change( $assignees, $step ) {
	//Update with the ID of your specific step to apply the bypass against
	if ( $step->get_id() == '76' ) {
		if ( isset( $_POST['gforms_save_entry'] ) && count( $_POST ) > 0 ) {
			$reset = false;
			if ( $assignees ) {
				foreach ( $assignees as $key => $assignee ) {
					//Update with the field ID of your email field in place of input_1
					if ( $assignee->get_type() == 'email' && isset( $_POST['input_1'] ) && $_POST['input_1'] == $assignee->get_id() ) {
						$reset = true;
					}
				}
			}

			if ( $reset ) {
				gravity_flow()->log_debug( __METHOD__ . '(): Bypassing assignee for step completion (email change scenario)' );
				$assignees = array();
			}
		}
	}

	return $assignees;
}