use C4::Context;
use C4::Auth;
use C4::Output;
-use C4::Members qw(GetOverduesForPatron);
use C4::Overdues qw(parse_overdues_letter);
use Koha::Patrons;
my $patron = Koha::Patrons->find( $borrowernumber );
output_and_exit_if_error( $input, $cookie, $template, { module => 'members', logged_in_user => $logged_in_user, current_patron => $patron } );
-my $overdues = GetOverduesForPatron($borrowernumber);
+my $overdues = [
+ map { $_->unblessed_all_relateds } $patron->get_overdues
+];
my $letter = parse_overdues_letter(
{