up => sub {
my ($args) = @_;
my ($dbh, $out) = @$args{qw(dbh out)};
# Delete 'empty' guarantors. No longer possible to add them via interface. Have no use.
$dbh->do(q{
DELETE FROM borrower_relationships WHERE guarantor_id IS NULL
});
ALTER TABLE borrower_relationships CHANGE COLUMN guarantor_id guarantor_id int(11) NOT NULL
-