The Gramps GEDCOM conversion is a bit more complete. And it did NOT discard much HEADer data. It just put it in unexpected places:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE database PUBLIC "-//Gramps//DTD Gramps XML 1.7.1//EN"
"http://gramps-project.org/xml/1.7.1/grampsxml.dtd">
<database xmlns="http://gramps-project.org/xml/1.7.1/">
<header>
<created date="2025-10-10" version="5.2.2"/>
<researcher>
<resname>Thomas Jones</resname>
<rescity>Anytown</rescity>
<resstate>TX</resstate>
<rescountry>USA</rescountry>
<respostal>75000</respostal>
<resphone>+1-214-555-0123</resphone>
<resemail>thomas.jones@example.com</resemail>
</researcher>
</header>
<tags>
<tag handle="_10022346ced81642810e01171bbe" change="1760136782" name="Imported 2025/10/10 17:53:02" color="#000000000000" priority="0"/>
</tags>
<events>
<event handle="_10022346cef7194d1aa660e81f36" change="1760136782" id="E0000">
<type>Birth</type>
<dateval val="1800" type="about"/>
<place hlink="_10022346cefc710503358b13e702"/>
</event>
<event handle="_10022346cf00365ee85b1e0c34a3" change="1760136782" id="E0001">
<type>Death</type>
<daterange start="1863-07-01" stop="1863-07-03"/>
<place hlink="_10022346cf064948c873fc9c95ca"/>
<noteref hlink="_10022346cf041080be572be97219"/>
</event>
</events>
<people>
<person handle="_10022346cef55675b2af1a4a8040" change="1760136782" id="I0001">
<gender>M</gender>
<name type="Birth Name">
<first>John James</first>
<surname>Doe</surname>
<suffix>III</suffix>
</name>
<eventref hlink="_10022346cef7194d1aa660e81f36" role="Primary"/>
<eventref hlink="_10022346cf00365ee85b1e0c34a3" role="Primary"/>
<citationref hlink="_10022346cf094e875f9b16769072"/>
<tagref hlink="_10022346ced81642810e01171bbe"/>
</person>
</people>
<citations>
<citation handle="_10022346cf094e875f9b16769072" change="1760136782" id="C0000">
<confidence>2</confidence>
<sourceref hlink="_10022346ced241d2d70c7615d6b9"/>
</citation>
</citations>
<sources>
<source handle="_10022346ced241d2d70c7615d6b9" change="1760136782" id="S0000">
<stitle>Import from JonesFamilyTree.ged</stitle>
<srcattribute type="Approved system identification" value="FamilySearch GEDCOM"/>
<srcattribute type="Version number of software product" value="5.5.1"/>
<srcattribute type="Name of software product" value="FamilySearch.org"/>
<srcattribute type="Generated By" value="FamilySearch.org 5.5.1"/>
<srcattribute type="Creation date and time of GEDCOM" value="2002-02-19 15:31:00"/>
<srcattribute type="GEDCOM version" value="5.5.1"/>
<srcattribute type="GEDCOM form" value="LINEAGE-LINKED"/>
<srcattribute type="Character set" value="UTF-8"/>
<srcattribute type="Language of GEDCOM text" value="English"/>
<reporef hlink="_10022346cedf3738c63d5e3206b8" medium="Unknown"/>
<reporef hlink="_10022346cef0a93619bb72f9175" medium="Unknown"/>
</source>
</sources>
<places>
<placeobj handle="_10022346cefc710503358b13e702" change="1760136782" id="P0000" type="Unknown">
<ptitle>USA</ptitle>
<pname value="USA"/>
</placeobj>
<placeobj handle="_10022346cf064948c873fc9c95ca" change="1760136782" id="P0001" type="City">
<ptitle>Gettysburg, Adams County, Pennsylvania, USA</ptitle>
<pname value="Gettysburg"/>
<placeref hlink="_10022346cf14205afbe419fc050f"/>
</placeobj>
<placeobj handle="_10022346cf0f4b07b3d43b7d3940" change="1760136782" id="P0002" type="Country">
<ptitle>USA</ptitle>
<pname value="USA"/>
</placeobj>
<placeobj handle="_10022346cf113a8bf995ce74ad27" change="1760136782" id="P0003" type="State">
<ptitle>Pennsylvania, USA</ptitle>
<pname value="Pennsylvania"/>
<placeref hlink="_10022346cf0f4b07b3d43b7d3940"/>
</placeobj>
<placeobj handle="_10022346cf14205afbe419fc050f" change="1760136782" id="P0004" type="County">
<ptitle>Adams County, Pennsylvania, USA</ptitle>
<pname value="Adams County"/>
<placeref hlink="_10022346cf113a8bf995ce74ad27"/>
</placeobj>
</places>
<repositories>
<repository handle="_10022346cedf3738c63d5e3206b8" change="1760136782" id="R0000">
<rname>Business that produced the product: FamilySearch International</rname>
<type>GEDCOM data</type>
<address>
<city>Salt Lake City</city>
<state>UT</state>
<country>USA</country>
<postal>84150</postal>
</address>
</repository>
<repository handle="_10022346cef0a93619bb72f9175" change="1760136782" id="R0001">
<rname>SUBM (Submitter): (@SUBM1@) Thomas Jones</rname>
<type>GEDCOM data</type>
<address>
<city>Anytown</city>
<state>TX</state>
<country>USA</country>
<postal>75000</postal>
<phone>+1-214-555-0123</phone>
</address>
<url href="thomas.jones@example.com" type="E-mail"/>
<noteref hlink="_10022346cef1152f5050bed449b8"/>
</repository>
</repositories>
<notes>
<note handle="_10022346ceea4f09669b820b6516" change="1760136782" id="N0000" type="GEDCOM import">
<text>Records not imported into HEAD (header):
ADDR element ignored '50 North West Temple Street' Line 6: 3 ADDR 50 North West Temple Street
Line ignored as not understood Line 11: 2 NOTE Exported by FamilySearch Web Application
</text>
<style name="fontface" value="Monospace">
<range start="0" end="285"/>
</style>
</note>
<note handle="_10022346cef1152f5050bed449b8" change="1760136782" id="N0001" type="GEDCOM import">
<text>Records not imported into SUBM (Submitter): (@SUBM1@) Thomas Jones:
ADDR element ignored '123 Main Street' Line 26: 1 ADDR 123 Main Street
</text>
<style name="fontface" value="Monospace">
<range start="0" end="172"/>
</style>
</note>
<note handle="_10022346cf041080be572be97219" change="1760136782" id="N0002" type="Event Note">
<text>Died in the Battle of Gettysburg</text>
<tagref hlink="_10022346ced81642810e01171bbe"/>
</note>
</notes>
</database>