Missing records in placex table and wrong parent_place_ids after importing Spain pbf data.

Hi:

I have just installed nominatim (version 2.5.1) and imported the data for Spain from geofabrik in pbf format. Both the installation and the import processes finished without any problem.

After everything was imported, I compared the content of the details.php page for the "Spain" record for our dataset with the one in nominatim.openstreetmap.com. And they are quite different:

Our installation displays only 5 records in the section "Parent Of" while the nominatim site displays all the administrative areas and other records. Any idea of why is this happening?

Other thing that we have observed is that there are some records which are missing in our system. For example, the relation 349050 is missing. I run a sql query "SELECT * FROM placex where osm_id=349050" and the record is not there. It looks like the data is not complete or something went wrong during the import process. Any idea of where might the problem be? Anybody with the same problem?

Thanks.

UPDATE: after looking at the records in our placex table, I've noticed that there are only 5 records whose parent_place_id column is Spain. I've also checked that all the administrative areas that are shown in the Spain details.php of the nominatim site have parent_place_id equals to zero. Still investigating the issue.