diff --git a/importexport/musicxml/exportxml.cpp b/importexport/musicxml/exportxml.cpp
index cf3a88c30535b..9054604b4dbc5 100644
--- a/importexport/musicxml/exportxml.cpp
+++ b/importexport/musicxml/exportxml.cpp
@@ -7819,18 +7819,56 @@ void ExportMusicXml::harmony(Harmony const* const h, FretDiagram const* const fd
             const QString textNameEscaped = h->hTextName().toHtmlEscaped();
             switch (h->harmonyType()) {
                   case HarmonyType::NASHVILLE: {
-                        _xml.tag("function", h->hFunction());
-                        QString k = "kind text=\"" + textNameEscaped + "\"";
-                        _xml.tag(k, "none");
+                        QString alter;
+                        QString functionText = h->hFunction();
+                        if (functionText.isEmpty()) {
+                              // we just dump the text as deprecated function
+                              _xml.tag("function", h->musicXmlText());
+                              _xml.tag("kind", "none");
+                              break;
+                              }
+                        else if (!functionText.at(0).isDigit()) {
+                              alter = functionText.at(0);
+                              functionText = functionText.at(1);
+                              }
+                        _xml.stag("numeral");
+                        _xml.tag("numeral-root", functionText);
+                        if (alter == "b")
+                              _xml.tag("numeral-alter", "-1");
+                        else if (alter == "#")
+                              _xml.tag("numeral-alter", "1");
+                        _xml.etag();
+                        if (!h->xmlKind().isEmpty()) {
+                              QString s = "kind";
+                              QString kindText = h->musicXmlText();
+                              if (h->musicXmlText() != "")
+                                    s += " text=\"" + kindText + "\"";
+                              if (h->xmlSymbols() == "yes")
+                                    s += " use-symbols=\"yes\"";
+                              if (h->xmlParens() == "yes")
+                                    s += " parentheses-degrees=\"yes\"";
+                              _xml.tag(s, h->xmlKind());
+                              }
+                        else {
+                              // default is major
+                              _xml.tag("kind", "major");
+                              }
                         }
                         break;
                   case HarmonyType::ROMAN: {
-                        // TODO: parse?
-                        _xml.tag("function", h->hTextName());   // note: HTML escape done by tag()
-                        QString k = "kind text=\"\"";
-                        _xml.tag(k, "none");
+                        static QRegularExpression romanRegex("[iv]+", QRegularExpression::CaseInsensitiveOption);
+                        QRegularExpressionMatch romanMatch = romanRegex.match(h->hTextName());
+                        if (romanMatch.capturedTexts().size()) {
+                              _xml.stag("numeral");
+                              QString k = "numeral-root text =\"" + h->hTextName() + "\"";
+                              _xml.tag(k, "1");
+                              _xml.etag();
+                              // only check for major or minor
+                              _xml.tag("kind", h->hTextName().at(0).isUpper() ? "major" : "minor");
+                              break;
+                              }
                         }
-                        break;
+                        // fallthrough
                   case HarmonyType::STANDARD:
                   default: {
                         _xml.stag("root");
diff --git a/importexport/musicxml/importmxmlpass2.cpp b/importexport/musicxml/importmxmlpass2.cpp
index d9742f9d26ac8..4068150c71e97 100644
--- a/importexport/musicxml/importmxmlpass2.cpp
+++ b/importexport/musicxml/importmxmlpass2.cpp
@@ -6893,7 +6893,7 @@ void MusicXMLParserPass2::harmony(const QString& partId, Measure* measure, const
       //QString printStyle = _e.attributes().value("print-style").toString();
       const QColor color { _e.attributes().value("color").toString() };
 
-      QString kind, kindText, functionText, symbols, parens;
+      QString kind, kindText, functionText, inversionText, symbols, parens;
       QList<HDegree> degreeList;
 
       FretDiagram* fd = nullptr;
@@ -6943,7 +6943,34 @@ void MusicXMLParserPass2::harmony(const QString& partId, Measure* measure, const
                   ha->setHarmonyType(HarmonyType::ROMAN);
                   }
             //else if (_e.name() == "function") { // MusicXML 4.0 replacement for "function"
-            // TODO: parse to decide between ROMAN and NASHVILLE
+            else if (_e.name() == "numeral") {
+                  ha->setRootTpc(Tpc::TPC_INVALID);
+                  ha->setBaseTpc(Tpc::TPC_INVALID);
+                  while (_e.readNextStartElement()) {
+                        if (_e.name() == "numeral-root") {
+                              QString numeralRoot = _e.readElementText();
+                              //QString numeralRootText = _e.attributes().value("text").toString();
+                              // TODO analyze text and import as roman numerals
+                              ha->setHarmonyType(HarmonyType::NASHVILLE);
+                              ha->setFunction(numeralRoot);
+                              }
+                        else if (_e.name() == "numeral-alter") {
+                              const int alter = _e.readElementText().toInt();
+                              switch (alter) {
+                                    case -1:
+                                          ha->setFunction("b" + ha->hFunction());
+                                          break;
+                                    case 1:
+                                          ha->setFunction("#" + ha->hFunction());
+                                          break;
+                                    default:
+                                          break;
+                                    }
+                              }
+                        else
+                              skipLogCurrElem();
+                        }
+                  }
             else if (_e.name() == "kind") {
                   // attributes: use-symbols  yes-no
                   //             text, stack-degrees, parentheses-degree, bracket-degrees,
@@ -6957,7 +6984,16 @@ void MusicXMLParserPass2::harmony(const QString& partId, Measure* measure, const
                         }
                   }
             else if (_e.name() == "inversion") {
-                  skipLogCurrElem();
+                  const int inversion = _e.readElementText().toInt();
+                  switch (inversion) {
+                        case 1: inversionText = "6";
+                              break;
+                        case 2: inversionText = "64";
+                              break;
+                        default:
+                              inversionText = "";
+                              break;
+                        }
                   }
             else if (_e.name() == "bass") {
                   QString step;
@@ -7030,7 +7066,7 @@ void MusicXMLParserPass2::harmony(const QString& partId, Measure* measure, const
             }
 
       const ChordDescription* d = nullptr;
-      if (ha->rootTpc() != Tpc::TPC_INVALID)
+      if (ha->rootTpc() != Tpc::TPC_INVALID || !ha->hFunction().isEmpty())
             d = ha->fromXml(kind, kindText, symbols, parens, degreeList);
       if (d) {
             ha->setId(d->id);
@@ -7038,7 +7074,7 @@ void MusicXMLParserPass2::harmony(const QString& partId, Measure* measure, const
             }
       else {
             ha->setId(-1);
-            QString textName = functionText + kindText;
+            QString textName = functionText + kindText + inversionText;
             ha->setTextName(textName);
             }
       ha->render();
diff --git a/mtest/musicxml/io/testHarmony6_ref.xml b/mtest/musicxml/io/testHarmony6_ref.xml
index aaa30548bf54f..2d6f62123f3a0 100644
--- a/mtest/musicxml/io/testHarmony6_ref.xml
+++ b/mtest/musicxml/io/testHarmony6_ref.xml
@@ -74,8 +74,10 @@ containing recognized text, unrecognized plaintext and unrecognized text requiri
       </measure>
     <measure number="2">
       <harmony print-frame="no">
-        <function>i</function>
-        <kind text="">none</kind>
+        <numeral>
+          <numeral-root text="i">1</numeral-root>
+         .</numeral>
+        <kind>minor</kind>
         </harmony>
       <note>
         <pitch>
@@ -93,8 +95,10 @@ containing recognized text, unrecognized plaintext and unrecognized text requiri
       </measure>
     <measure number="3">
       <harmony print-frame="no">
-        <function>1</function>
-        <kind text="m">none</kind>
+        <numeral>
+          <numeral-root>1</numeral-root>
+          </numeral>
+        <kind text="m">minor</kind>
         </harmony>
       <note>
         <pitch>
@@ -134,8 +138,10 @@ containing recognized text, unrecognized plaintext and unrecognized text requiri
       </measure>
     <measure number="5">
       <harmony print-frame="no">
-        <function>xyz</function>
-        <kind text="">none</kind>
+        <root>
+          <root-step text="">C</root-step>
+          </root>
+        <kind text="xyz">none</kind>
         </harmony>
       <note>
         <pitch>
@@ -194,8 +200,10 @@ containing recognized text, unrecognized plaintext and unrecognized text requiri
       </measure>
     <measure number="8">
       <harmony print-frame="no">
-        <function>&lt;&gt;&amp;&quot;</function>
-        <kind text="">none</kind>
+        <root>
+          <root-step text="">C</root-step>
+          </root>
+        <kind text="&lt;&gt;&amp;&quot;">none</kind>
         </harmony>
       <note>
         <pitch>
@@ -213,8 +221,8 @@ containing recognized text, unrecognized plaintext and unrecognized text requiri
       </measure>
     <measure number="9">
       <harmony print-frame="no">
-        <function></function>
-        <kind text="&lt;&gt;&amp;&quot;">none</kind>
+        <function>&lt;&gt;&amp;&quot;</function>
+        <kind>none</kind>
         </harmony>
       <note>
         <pitch>