diff --git a/tools/cldr-apps/js/src/esm/cldrDash.mjs b/tools/cldr-apps/js/src/esm/cldrDash.mjs
index fe4b1189aca..49e8356f9e6 100644
--- a/tools/cldr-apps/js/src/esm/cldrDash.mjs
+++ b/tools/cldr-apps/js/src/esm/cldrDash.mjs
@@ -396,14 +396,22 @@ async function downloadXlsx(data, locale, cb) {
   const xlsFileName = `Dash_${locale}_${coverageLevelName}.xlsx`;
 
   // Fetch all XPaths in parallel since it'll take a while
-  cb(`Loading…`);
+  cb(`Loading rows…`);
   const allXpaths = [];
   for (let dashEntry of entries) {
     if (dashEntry.section === "Reports") {
       continue; // skip this
     }
     allXpaths.push(dashEntry.xpstrid);
+    try {
+      await xpathMap.get(dashEntry.xpstrid);
+    } catch (e) {
+      throw Error(
+        `${e}:  Could not load XPath for ${JSON.stringify(dashEntry)}`
+      );
+    }
   }
+  cb(`Loading xpaths…`);
   await Promise.all(allXpaths.map((x) => xpathMap.get(x)));
   cb(`Calculating…`);
 
@@ -427,8 +435,15 @@ async function downloadXlsx(data, locale, cb) {
   ];
 
   for (let e of entries) {
-    const xpath =
-      e.section === "Reports" ? "-" : (await xpathMap.get(e.xpstrid)).path;
+    async function getXpath() {
+      if (e.section === "Reports") return "-";
+      try {
+        return (await xpathMap.get(e.xpstrid)).path;
+      } catch (ex) {
+        throw Error(`${e}: Could not get xpath of ${JSON.stringify(e)}`);
+      }
+    }
+    const xpath = await getXpath();
     const url = `https://st.unicode.org/cldr-apps/v#/${e.locale}/${e.page}/${e.xpstrid}`;
     ws_data.push([
       e.cat,
diff --git a/tools/cldr-apps/src/main/java/org/unicode/cldr/web/XPathTable.java b/tools/cldr-apps/src/main/java/org/unicode/cldr/web/XPathTable.java
index 98317d8c62b..5bf26a477d4 100644
--- a/tools/cldr-apps/src/main/java/org/unicode/cldr/web/XPathTable.java
+++ b/tools/cldr-apps/src/main/java/org/unicode/cldr/web/XPathTable.java
@@ -150,8 +150,6 @@ private void setupDB(Connection ourConn) throws SQLException {
 
     public Hashtable<String, Integer> stringToId =
             new Hashtable<>(4096); // public for statistics only
-    public Hashtable<Long, String> sidToString =
-            new Hashtable<>(4096); // public for statistics only
 
     public String statistics() {
         return "DB: "
@@ -375,7 +373,7 @@ public final String getById(int id) {
     public final void setById(int id, String xpath) {
         xpath = xpath.intern();
         stringToId.put(idToString_put(id, xpath), id);
-        sidToString.put(getStringID(xpath), xpath);
+        StringId.getId(xpath); // ensure in cache
     }
 
     /**
@@ -758,24 +756,7 @@ public String getByStringID(String id) {
         }
     }
 
-    String getByStringID(long l) {
-        String s = sidToString.get(l);
-        if (s != null) return s;
-        // slow way
-        for (String x : stringToId.keySet()) {
-            if (getStringID(x) == l) {
-                sidToString.put(l, x);
-                return x;
-            }
-        }
-        if (SurveyMain.isUnofficial()) {
-            logger.warning(
-                    "xpt: Couldn't find stringid "
-                            + Long.toHexString(l)
-                            + " - sid has "
-                            + sidToString.size());
-        }
-        // it may be
-        return null;
+    final String getByStringID(long l) {
+        return StringId.getStringFromId(l);
     }
 }