Bug #93613 for DBIx-Class-Schema-Loader: dbic_dump picks might_have instead of has_many

Hi, My set up... perl(brew) v5.16.2 DBIx::Class::Schema::Loader 0.07039 postgresql 9.1.12 system kubuntu 13.10 on i686 I have a person table and a person_address table, where person -> person_address is a one-to-many relationship. In the address table, I need to allow for partial information, so NULL is allowed in most of the fields. But I'd also like to have unique constraints across the address fields so that the table doesn't fill up with duplicates. I use a technique I found here (http://stackoverflow.com/questions/8289100/create-unique-constraint-with-null-columns) that makes an index using coalesce on each address field to do that. This works very nicely as regards preventing duplicates but has the side effect that when I refresh my DBIx::Class::Schema using dbic_dump the person to person_address relationship is might_have instead of has_many. I attach a minimal example as a bash script. Is this a bug? Or just too much to expect of dbic_dump that it navigate its way through the index to see what's going on? Many thanks for such massively useful and labour-saving software, G.