FK errors in neutron-db-migrate revision --autogenerate

ubu7% neutron-db-manage --subproject networking-midonet revision -m "foo" --autogenerate
  Running revision for networking-midonet ...
INFO [alembic.runtime.migration] Context impl PostgresqlImpl.
INFO [alembic.runtime.migration] Will assume transactional DDL.
Traceback (most recent call last):
  File "/usr/local/bin/neutron-db-manage", line 10, in <module>
    sys.exit(main())
  File "/opt/stack/neutron/neutron/db/migration/cli.py", line 686, in main
    return_val |= bool(CONF.command.func(config, CONF.command.name))
  File "/opt/stack/neutron/neutron/db/migration/cli.py", line 258, in do_revision
    do_alembic_command(config, cmd, **kwargs)
  File "/opt/stack/neutron/neutron/db/migration/cli.py", line 108, in do_alembic_command
    getattr(alembic_command, cmd)(config, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/alembic/command.py", line 117, in revision
    script_directory.run_env()
  File "/usr/local/lib/python2.7/dist-packages/alembic/script/base.py", line 407, in run_env
    util.load_python_file(self.dir, 'env.py')
  File "/usr/local/lib/python2.7/dist-packages/alembic/util/pyfiles.py", line 93, in load_python_file
    module = load_module_py(module_id, path)
  File "/usr/local/lib/python2.7/dist-packages/alembic/util/compat.py", line 79, in load_module_py
    mod = imp.load_source(module_id, path, fp)
  File "/opt/stack/networking-midonet/midonet/neutron/db/migration/alembic_migration/env.py", line 95, in <module>
    run_migrations_online()
  File "/opt/stack/networking-midonet/midonet/neutron/db/migration/alembic_migration/env.py", line 86, in run_migrations_online
    context.run_migrations()
  File "<string>", line 8, in run_migrations
  File "/usr/local/lib/python2.7/dist-packages/alembic/runtime/environment.py", line 797, in run_migrations
    self.get_context().run_migrations(**kw)
  File "/usr/local/lib/python2.7/dist-packages/alembic/runtime/migration.py", line 303, in run_migrations
    for step in self._migrations_fn(heads, self):
  File "/usr/local/lib/python2.7/dist-packages/alembic/command.py", line 97, in retrieve_migrations
    revision_context.run_autogenerate(rev, context)
  File "/usr/local/lib/python2.7/dist-packages/alembic/autogenerate/api.py", line 369, in run_autogenerate
    self._run_environment(rev, migration_context, True)
  File "/usr/local/lib/python2.7/dist-packages/alembic/autogenerate/api.py", line 405, in _run_environment
    autogen_context, migration_script)
  File "/usr/local/lib/python2.7/dist-packages/alembic/autogenerate/compare.py", line 22, in _populate_migration_script
    _produce_net_changes(autogen_context, upgrade_ops)
  File "/usr/local/lib/python2.7/dist-packages/alembic/autogenerate/compare.py", line 48, in _produce_net_changes
    autogen_context, upgrade_ops, schemas
  File "/usr/local/lib/python2.7/dist-packages/alembic/util/langhelpers.py", line 314, in go
    fn(*arg, **kw)
  File "/usr/local/lib/python2.7/dist-packages/alembic/autogenerate/compare.py", line 73, in _autogen_for_tables
    [(table.schema, table.name) for table in metadata.sorted_tables]
  File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/sql/schema.py", line 3604, in sorted_tables
    return ddl.sort_tables(sorted(self.tables.values(), key=lambda t: t.key))
  File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/sql/ddl.py", line 991, in sort_tables
    tables, filter_fn=_skip_fn, extra_dependencies=extra_dependencies)
  File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/sql/ddl.py", line 1058, in sort_tables_and_constraints
    dependent_on = fkc.referred_table
  File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/sql/schema.py", line 2872, in referred_table
    return self.elements[0].column.table
  File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/util/langhelpers.py", line 754, in __get__
    obj.__dict__[self.__name__] = result = self.fget(obj)
  File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/sql/schema.py", line 1841, in column
    tablekey)
sqlalchemy.exc.NoReferencedTableError: Foreign key associated with column 'bgp_speaker_router_associations.bgp_speaker_id' could not find table 'bgp_speakers' with which to generate a foreign key to target column 'id'
ubu7%