WebRatio no imports all attributes (fields) of a table

Hi, I have a Postgres database and I want to import its tables. So, I created the DB, I synchronize it (with 3 database schema), and, WebRatio doesn't import some attributes or fields in my tables, casuallity, this attributes or fields are FOREIGN KEYS. I synchronized with button foreign key with option enable and disable. It is a bug?

In Metadata Database appear all fields!!!

//------------------PSQL----------------------------------//

Scripts in postgres:

CREATE TABLE metadatavalue
(
  metadata_value_id integer NOT NULL DEFAULT nextval('metadatavalue_seq'::regclass),
  item_id integer,
  metadata_field_id integer,
  text_value text,
  text_lang character varying(24),
  place integer,
  authority character varying(100),
  confidence integer DEFAULT (-1),
  CONSTRAINT metadatavalue_pkey PRIMARY KEY (metadata_value_id ),
  CONSTRAINT metadatavalue_item_id_fkey FOREIGN KEY (item_id)
      REFERENCES item (item_id) MATCH SIMPLE
      ON UPDATE NO ACTION ON DELETE NO ACTION,
  CONSTRAINT metadatavalue_metadata_field_id_fkey FOREIGN KEY (metadata_field_id)
      REFERENCES metadatafieldregistry (metadata_field_id) MATCH SIMPLE
      ON UPDATE NO ACTION ON DELETE NO ACTION
)
WITH (
  OIDS=FALSE
);

CREATE TABLE item
(
  item_id integer NOT NULL,
  submitter_id integer,
  in_archive boolean,
  withdrawn boolean,
  last_modified timestamp with time zone,
  owning_collection integer,
  CONSTRAINT item_pkey PRIMARY KEY (item_id ),
  CONSTRAINT item_submitter_id_fkey FOREIGN KEY (submitter_id)
      REFERENCES eperson (eperson_id) MATCH SIMPLE
      ON UPDATE NO ACTION ON DELETE NO ACTION
)
WITH (
  OIDS=FALSE
);

CREATE TABLE metadatafieldregistry
(
  metadata_field_id integer NOT NULL DEFAULT nextval('metadatafieldregistry_seq'::regclass),
  metadata_schema_id integer NOT NULL,
  element character varying(64),
  qualifier character varying(64),
  scope_note text,
  CONSTRAINT metadatafieldregistry_pkey PRIMARY KEY (metadata_field_id ),
  CONSTRAINT metadatafieldregistry_metadata_schema_id_fkey FOREIGN KEY (metadata_schema_id)
      REFERENCES metadataschemaregistry (metadata_schema_id) MATCH SIMPLE
      ON UPDATE NO ACTION ON DELETE NO ACTION
)
WITH (
  OIDS=FALSE
);

Relationship:

metadatafieldregistry-----------------metadatavalue-----------------item

//----------END PSQL------------------------------------------//

//------------WebRatio----------------------------------------//

These tables and fields are what I see in WebRatio Domain Model

TABLE metadatavalue
(
  metadata_value_id integer,
  text_value text,
  text_lang character varying(24),
  place integer,
  authority character varying(100),
  confidence integer,
);

TABLE item
(
  item_id integer,
  in_archive boolean,
  withdrawn boolean,
  last_modified timestamp,
  owning_collection integer,
);

TABLE metadatafieldregistry
(
  metadata_field_id integer,
  element character varying(64),
  qualifier character varying(64),
  scope_note text,
);

//----------------END WebRatio------------------------------------//

Thanks, Jose