$mime->header_set('References', '<zz-mid@b>');
ok($im->add($mime), 'message with multiple Message-ID');
$im->done;
+ my ($total, undef) = $ibx->over->recent;
+ is($ibx->mm->num_highwater, $total, 'got expected highwater value');
my $srch = $ibx->search;
my $mset1 = $srch->reopen->query('m:abcde@1', { mset => 1 });
is($mset1->size, 1, 'message found by first MID');