modify relation's member attribute during imort

[denis-olyanyuk]

I am using Nominatim and I was using one old osm.pbf file. I decided to update it and found out that I am no longer able to find an object which was in Nominatim before.

It is this node https://nominatim.openstreetmap.org/ui/details.html?osmtype=N&osmid=158837444&keywords=1
Long story short if I import relation 8th version of parent relation https://www.openstreetmap.org/api/0.6/relation/2017758/8 I cannot find node, but if I import 7th version https://www.openstreetmap.org/api/0.6/relation/2017758/7 - everything is fine.
The only difference is the role of the node, in 7th version it's "admin_centre" and in 8th - "label".

So my question is: can I modify this role somewhere? I tried in flex-base.lua in the function process_relation modify this relation but osm2pgsql ignores that modification.

Related question was asked in Nominatim project, paste it here, might be useful
osm-search/Nominatim#3662

[joto]

Closing as off-topic here. The Nominatim repo is the right place for this question.

[denis-olyanyuk]

I provided information about Nominatim just for better understanding what I'm doing and why.
But my question is only about osm2pgsql.

Let me ask it again, but without mentioning Nominatim at all.

While I am importing a relation object from osm file I want to modify a member of that relation so that modification will be represented in the database. I tried to adjust the attribute "role" in member (change it from "label" to "admin-center") in function process_relation, but in the database (table planet_osm_rels) this member was saved with an old value.

Is there any way to modify raw data "on the fly" or do I need to modify only osm.pbf file? 

[lonvia]

planet_osm_rels is one of the backing tables keeping original OSM data. You have no influence on that.

[denis-olyanyuk]

planet_osm_rels is one of the backing tables keeping original OSM data. You have no influence on that.
Got it. Thank you for reply.