diff --git a/tools/cldr-apps/js/src/esm/cldrErrorSubtypes.mjs b/tools/cldr-apps/js/src/esm/cldrErrorSubtypes.mjs
index b244f27914d..4e5f21d3a2e 100644
--- a/tools/cldr-apps/js/src/esm/cldrErrorSubtypes.mjs
+++ b/tools/cldr-apps/js/src/esm/cldrErrorSubtypes.mjs
@@ -5,6 +5,7 @@ import * as cldrAjax from "./cldrAjax.mjs";
 import * as cldrLoad from "./cldrLoad.mjs";
 import * as cldrStatus from "./cldrStatus.mjs";
 import * as cldrSurvey from "./cldrSurvey.mjs";
+import * as cldrDom from "./cldrDom.mjs";
 
 const instructions =
   "<p>\n" +
@@ -141,10 +142,14 @@ function reloadMapHandler(json) {
     }
   } else {
     html += "<p>" + json.status + "</p>";
+    html += redirectSoon;
+    window.setTimeout(load, coupleSeconds);
   }
-  html += redirectSoon;
   el.innerHTML = html;
-  window.setTimeout(load, coupleSeconds);
+  if (json.err) {
+    const b = cldrDom.createLinkToFn('special_error_subtypes', load, 'button');
+    el.appendChild(b);
+  }
 }
 
 function setOnClicks() {
diff --git a/tools/cldr-apps/src/main/java/org/unicode/cldr/web/ErrorSubtypes.java b/tools/cldr-apps/src/main/java/org/unicode/cldr/web/ErrorSubtypes.java
index 249e30e0836..8f529570738 100644
--- a/tools/cldr-apps/src/main/java/org/unicode/cldr/web/ErrorSubtypes.java
+++ b/tools/cldr-apps/src/main/java/org/unicode/cldr/web/ErrorSubtypes.java
@@ -78,10 +78,12 @@ private static void getRecheck(SurveyJSONWrapper r, String recheck)
             throws MalformedURLException {
         if (recheck.startsWith("MAP")) {
             try {
-                SubtypeToURLMap map = SubtypeToURLMap.reload();
+                // load directly to make sure there are no errors
+                SubtypeToURLMap map = SubtypeToURLMap.makeDefaultInstance();
                 if (map == null) {
                     r.put("err", "FAILED. Check for errors.");
                 } else {
+                    SubtypeToURLMap.setDefaultInstance(map);
                     r.put("status", "SUCCESS!");
                 }
             } catch (Throwable t) {
diff --git a/tools/cldr-apps/src/main/java/org/unicode/cldr/web/SubtypeToURLMap.java b/tools/cldr-apps/src/main/java/org/unicode/cldr/web/SubtypeToURLMap.java
index 325c7f0776a..e122defc49b 100644
--- a/tools/cldr-apps/src/main/java/org/unicode/cldr/web/SubtypeToURLMap.java
+++ b/tools/cldr-apps/src/main/java/org/unicode/cldr/web/SubtypeToURLMap.java
@@ -36,6 +36,7 @@
 import org.unicode.cldr.test.CheckCLDR.CheckStatus.Subtype;
 import org.unicode.cldr.test.CheckCLDR.SubtypeToURLProvider;
 import org.unicode.cldr.util.CLDRCacheDir;
+import org.unicode.cldr.util.CLDRConfig;
 import org.unicode.cldr.util.CLDRTool;
 
 @CLDRTool(
@@ -53,7 +54,8 @@ public class SubtypeToURLMap implements SubtypeToURLProvider {
     public static void main(String args[]) throws FileNotFoundException, IOException {
         if (args.length == 0) {
             System.err.println(
-                    "Usage: SubtypeToURLMap (url or file path). The default map is " + DEFAULT_URL);
+                    "Usage: SubtypeToURLMap (url or file path). The default map is "
+                            + getDefaultUrl());
             return;
         } else {
             int problems = 0;
@@ -447,7 +449,7 @@ static SubtypeToURLMap make() {
                 }
             }
             try {
-                map = SubtypeToURLMap.getInstance(new URL(getDefaultUrl()));
+                map = makeDefaultInstance();
                 logger.info("Read new map from " + getDefaultUrl());
                 // now, write out the cache
                 writeToCache(map);
@@ -492,7 +494,7 @@ private static void writeToCache(SubtypeToURLMap map) {
      * @return
      */
     public static String getDefaultUrl() {
-        return DEFAULT_URL;
+        return CLDRConfig.getInstance().getProperty("CLDR_SUBTYPE_URL", DEFAULT_URL);
     }
     /**
      * Get the default instance.
@@ -511,6 +513,17 @@ public static String forSubtype(Subtype subtype) {
     public static SubtypeToURLMap reload() {
         return (SubtypeToURLMapHelper.INSTANCE = SubtypeToURLMapHelper.make());
     }
+
+    /** call this to propagate loading */
+    public static SubtypeToURLMap makeDefaultInstance()
+            throws IOException, URISyntaxException, MalformedURLException {
+        return SubtypeToURLMap.getInstance(new URL(getDefaultUrl()));
+    }
+
+    public static void setDefaultInstance(SubtypeToURLMap m) {
+        SubtypeToURLMapHelper.INSTANCE = m;
+    }
+
     @Override
     public String apply(Subtype t) {
         return forSubtype(t);