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I would like to use osm2po as a routing engine/library. My problem is that in geojson response, there is no osm_id value returned, only id field which, if I assume correctly is not a fixed value. I mean if I made new graph file from newer osm data, id of the same feature/edge could be different. Is there a way to get osm_id from service response?

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No. (Not yet). But if you can give me a good use case, I will think about it. Alternatively use the returned SegmentId for Database-lookups. The value corresponds to the ID-Field in the 2po-table where all corresponding osm-IDs are in.

Nevertheless, osm2po-IDs change because OSM-IDs do as well.

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Hm ok I'm gis newbie here, I assumed osm_id doesn't change, but now when I think of it, not depending on fixed osm_id makes sense.. This makes me think about another question, but I will open new question for it. – Kamil Jan 27 at 20:30

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