gistfile1.txt

add_action( 'elementor/query/investmentquery', 'elementor_query_investment_only' );
function elementor_query_investment_only( $query )
{
    PH()->query->property_query( $query );
    
    // Set the custom post type 
	$query->set( 'post_type', [ 'property' ] );
    
    $tax_query = $query->get('tax_query');
    
    $new_tax_query = $tax_query;
    
    $new_tax_query[] = array(
        'taxonomy'  => 'property_type',
        'terms' => array(79),
        'operator' => 'IN',
    );

    $query->set( 'tax_query', $new_tax_query );
}