+ if (my $alt = $new->{altid}) {
+ require PublicInbox::AltId;
+ foreach my $i (0..$#$alt) {
+ my $src = PublicInbox::AltId->new($old, $alt->[$i], 0);
+ $src->mm_alt or next;
+ my $dst = PublicInbox::AltId->new($new, $alt->[$i], 1);
+ $dst = $dst->{filename};
+ $src->mm_alt->{dbh}->sqlite_backup_to_file($dst);
+ }
+ }