Convert from GPX to OSMdata file not support gpx:extension:

[kksrally@…]

What steps will reproduce the problem?

1. import GPX into JOSM
2. on layers tab with gpx file - right click. Into a OSM data (dont know exactly as use ukranian version "Перетворити в шар даних"

What is the expected result?

Each node must have tags and values:
gpx:ele=166.1999969482422
gpx:time=2024-10-25T10:03:57Z
gpx:extension:ns3:segment:TrackPointExtension:atemp=12.0
gpx:extension:ns3:segment:TrackPointExtension:cad=9
gpx:extension:ns3:segment:TrackPointExtension:hr=102

And way:
gpx:name=Kyiv Mountain Biking
gpx:type=mountain_biking

What happens instead?

Nodes have only
gpx:ele=166.1999969482422
gpx:time=2024-10-25T10:03:57Z

But way:
gpx:extension:ns3:segment:TrackPointExtension:atemp=12.0
gpx:extension:ns3:segment:TrackPointExtension:cad=9
gpx:extension:ns3:segment:TrackPointExtension:hr=102
gpx:name=Kyiv Mountain Biking
gpx:type=mountain_biking

first three tags where on way. And it's from last node

Please provide any additional information below. Attach a screenshot if possible.

Way:

Node:

GPX example with first 3 points and last point of gpx track:

<?xml version="1.0" encoding="UTF-8" ?> 
- <gpx creator="Garmin Connect" version="1.1" xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/11.xsd" xmlns:ns3="http://www.garmin.com/xmlschemas/TrackPointExtension/v1" xmlns="http://www.topografix.com/GPX/1/1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ns2="http://www.garmin.com/xmlschemas/GpxExtensions/v3">
- <metadata>
- <link href="connect.garmin.com">
  <text>Garmin Connect</text> 
  </link>
  <time>2024-10-25T09:07:33.000Z</time> 
  </metadata>
- <trk>
  <name>Kyiv Mountain Biking</name> 
  <type>mountain_biking</type> 
- <trkseg>
- <trkpt lat="50.51528432406485080718994140625" lon="30.4425266571342945098876953125">
  <ele>148.600006103515625</ele> 
  <time>2024-10-25T09:07:37.000Z</time> 
- <extensions>
- <ns3:TrackPointExtension>
  <ns3:atemp>22.0</ns3:atemp> 
  <ns3:hr>97</ns3:hr> 
  <ns3:cad>0</ns3:cad> 
  </ns3:TrackPointExtension>
  </extensions>
  </trkpt>
- <trkpt lat="50.5152686499059200286865234375" lon="30.44250545091927051544189453125">
  <ele>148.600006103515625</ele> 
  <time>2024-10-25T09:07:38.000Z</time> 
- <extensions>
- <ns3:TrackPointExtension>
  <ns3:atemp>22.0</ns3:atemp> 
  <ns3:hr>99</ns3:hr> 
  <ns3:cad>0</ns3:cad> 
  </ns3:TrackPointExtension>
  </extensions>
  </trkpt>
- <trkpt lat="50.5152438394725322723388671875" lon="30.4424793832004070281982421875">
  <ele>148.600006103515625</ele> 
  <time>2024-10-25T09:07:39.000Z</time> 
- <extensions>
- <ns3:TrackPointExtension>
  <ns3:atemp>22.0</ns3:atemp> 
  <ns3:hr>101</ns3:hr> 
  <ns3:cad>0</ns3:cad> 
  </ns3:TrackPointExtension>
  </extensions>
  </trkpt>
- <trkpt lat="50.5153150856494903564453125" lon="30.442622713744640350341796875">
  <ele>145.399993896484375</ele> 
  <time>2024-10-25T10:32:08.000Z</time> 
- <extensions>
- <ns3:TrackPointExtension>
  <ns3:atemp>12.0</ns3:atemp> 
  <ns3:hr>102</ns3:hr> 
  <ns3:cad>9</ns3:cad> 
  </ns3:TrackPointExtension>
  </extensions>
  </trkpt>
</trkseg>
  </trk>
  </gpx>

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2024-01-16 08:06:33 +0100 (Tue, 16 Jan 2024)
Build-Date:2024-01-17 02:31:01
Revision:18940
Relative:URL: ^/trunk

Identification: JOSM/1.5 (18940 uk) Windows 10 64-Bit
OS Build number: Windows 10 Enterprise 2009 (19045)
Memory Usage: 373 MB / 989 MB (139 MB allocated, but free)
Java version: 1.8.0_261-b12, Oracle Corporation, Java HotSpot(TM) Client VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 1364×768 (scaling 1.00×1.00)
Maximum Screen Size: 1364×768
Best cursor sizes: 16×16→32×32, 32×32→32×32
System property file.encoding: Cp1251
System property sun.jnu.encoding: Cp1251
Locale info: uk_UA
Numbers with default locale: 1234567890 -> 1234567890
Program arguments: [D:\<user.name>\Завантаження\БроДюни.gpx]
Dataset consistency test: No problems found

Plugins:
+ ImproveWay (32)
+ editgpx (36126)
+ reverter (36256)
+ undelete (36298)
+ utilsplugin2 (36298)

Map paint styles:
+ https://josm.openstreetmap.de/josmfile?page=Styles/Potlatch2&zip=1