diff --git a/server/src/nest/places/places.helpers.ts b/server/src/nest/places/places.helpers.ts
index 3dd5c2884..9533a78d0 100644
--- a/server/src/nest/places/places.helpers.ts
+++ b/server/src/nest/places/places.helpers.ts
@@ -134,6 +134,14 @@ function lineCourse(routeGeometry: string | null | undefined): string {
   return [first[0], first[1], last[0], last[1], south, west, north, east].map((v) => v.toFixed(3)).join(',');
 }
 
+/** An imported row as the dedup set reads it: a line when it carries one. */
+export function lineCandidate(
+  name: string | null | undefined,
+  row: { lat: number | null; lng: number | null; routeGeometry?: string | null },
+): DedupCandidate {
+  return { name, lat: row.lat, lng: row.lng, track: !!row.routeGeometry, routeGeometry: row.routeGeometry };
+}
+
 /** A track's entry in `DedupSet.tracks`: its normalized name and its course. */
 function trackKey(name: string, routeGeometry: string | null | undefined): string {
   return `${name}\u0000${lineCourse(routeGeometry)}`;
diff --git a/server/src/nest/places/places.service.ts b/server/src/nest/places/places.service.ts
index b0514e2f1..0ac0c1678 100644
--- a/server/src/nest/places/places.service.ts
+++ b/server/src/nest/places/places.service.ts
@@ -58,7 +58,7 @@ import {
   buildCategoryNameLookup,
   escapeLikePattern,
   dedupSetOf,
-  isPlaceDuplicate,
+  isPlaceDuplicate, lineCandidate,
   mapWithConcurrency,
   pickEnrichmentMatch,
   reclaimPhotoCache,
@@ -758,7 +758,7 @@ export class PlacesService {
   async gpxDuplicates(tripId: string, rows: PreparedGpxPlace[]): Promise<boolean[]> {
     const dedup = await this.buildDedupSet(tripId);
     return rows.map((wp) => {
-      const candidate = { name: wp.name, lat: wp.lat, lng: wp.lng, track: !!wp.routeGeometry, routeGeometry: wp.routeGeometry };
+      const candidate = lineCandidate(wp.name, wp);
       if (isPlaceDuplicate(candidate, dedup)) return true;
       trackInsertedInDedupSet(candidate, dedup);
       return false;
@@ -925,7 +925,7 @@ export class PlacesService {
     // `findWithTagsAndRatings` INSIDE the caller's transaction, so the read
     // sees the still-uncommitted row.
     for (const wp of waypoints) {
-      if (isPlaceDuplicate({ name: wp.name, lat: wp.lat, lng: wp.lng, track: !!wp.routeGeometry, routeGeometry: wp.routeGeometry }, dedup)) {
+      if (isPlaceDuplicate(lineCandidate(wp.name, wp), dedup)) {
         skipped++;
         continue;
       }
@@ -960,7 +960,7 @@ export class PlacesService {
       });
       const place = (await this.placesRepo.findWithTagsAndRatings(placeId))!;
       created.push(place);
-      trackInsertedInDedupSet({ name: wp.name, lat: wp.lat, lng: wp.lng, track: !!wp.routeGeometry, routeGeometry: wp.routeGeometry }, dedup);
+      trackInsertedInDedupSet(lineCandidate(wp.name, wp), dedup);
     }
 
     return { places: created, count: created.length, skipped };
@@ -1033,7 +1033,7 @@ export class PlacesService {
         const fallbackName = `Placemark ${fallbackIndex}`;
         const name = parsedPlacemark.name || fallbackName;
 
-        if (isPlaceDuplicate({ name, lat: parsedPlacemark.lat, lng: parsedPlacemark.lng, track: isPath, routeGeometry: parsedPlacemark.routeGeometry }, dedup)) {
+        if (isPlaceDuplicate(lineCandidate(name, parsedPlacemark), dedup)) {
           summary.skippedCount += 1;
           dupCount++;
           fallbackIndex += 1;
@@ -1079,7 +1079,7 @@ export class PlacesService {
 
         const place = (await this.placesRepo.findWithTagsAndRatings(placeId))!;
         created.push(place);
-        trackInsertedInDedupSet({ name, lat: parsedPlacemark.lat, lng: parsedPlacemark.lng, track: isPath, routeGeometry: parsedPlacemark.routeGeometry }, dedup);
+        trackInsertedInDedupSet(lineCandidate(name, parsedPlacemark), dedup);
         summary.createdCount += 1;
         fallbackIndex += 1;
       }
diff --git a/server/tests/unit/nest/tours.gpx.atomic.test.ts b/server/tests/unit/nest/tours.gpx.atomic.test.ts
index 3282ad414..6dcacf826 100644
--- a/server/tests/unit/nest/tours.gpx.atomic.test.ts
+++ b/server/tests/unit/nest/tours.gpx.atomic.test.ts
@@ -418,9 +418,10 @@ describe('Tours GPX atomic persistence and postcommit publication', () => {
   });
 
   it('imports only the new tracks and publishes only committed rows in a mixed result', async () => {
+    // The same Ridge as in the mixed file, line and all: a track is a duplicate only of one that runs alike (#2870).
     const existing = Buffer.from(`<gpx><trk><name>Ridge</name><trkseg>
       <trkpt lat="49" lon="12"><ele>100</ele></trkpt><trkpt lat="49.01" lon="12.01"><ele>150</ele></trkpt>
-    </trkseg></trk></gpx>`);
+    </trkseg><trkseg><trkpt lat="49.02" lon="12.02"><ele>120</ele></trkpt></trkseg></trk></gpx>`);
     expect((await tours.importGpxAsTour(tripId, existing))?.tours).toHaveLength(1);
     broadcast.mockClear();