diff --git a/frontend/src/melodies/MelodyForm.jsx b/frontend/src/melodies/MelodyForm.jsx
index b4cf00f..d07c8c8 100644
--- a/frontend/src/melodies/MelodyForm.jsx
+++ b/frontend/src/melodies/MelodyForm.jsx
@@ -197,12 +197,15 @@ export default function MelodyForm() {
       lastEditedBy: userName,
       adminNotes,
     };
-    return {
+    const body = {
       information: { ...infoWithoutNotes, totalActiveBells },
       default_settings: settings,
-      type, url, uid, pid,
+      type, uid, pid,
       metadata,
     };
+    // Only send url if non-empty — avoids overwriting a backend-set URL with an empty string
+    if (url) body.url = url;
+    return body;
   };
 
   const uploadFiles = async (melodyId) => {
@@ -562,7 +565,7 @@ export default function MelodyForm() {
                   <label className="block text-sm font-medium mb-1" style={labelStyle}>PID (Playback ID)</label>
                   <input type="text" value={pid} onChange={(e) => setPid(e.target.value)} placeholder="eg. builtin_festive_vesper" className={inputClass} />
                 </div>
-                {isEdit && url && (
+                {url && (
                   <div className="md:col-span-2">
                     <label className="block text-sm font-medium mb-1" style={labelStyle}>URL (auto-set from binary upload)</label>
                     <input type="text" value={url} readOnly className={inputClass} style={{ opacity: 0.7 }} />
@@ -804,7 +807,24 @@ export default function MelodyForm() {
               setShowSelectBuilt(false);
               setAssignedBinaryName(archetype.name);
               if (!pid.trim() && archetype.pid) setPid(archetype.pid);
-              if (isEdit) loadMelody();
+              if (archetype.steps != null) updateInfo("steps", archetype.steps);
+              if (archetype.totalNotes != null) updateInfo("totalNotes", archetype.totalNotes);
+              if (archetype.archetype_csv != null) updateInfo("archetype_csv", archetype.archetype_csv);
+              if (isEdit) {
+                loadMelody();
+              } else {
+                // Refresh files so binary_url and url are shown
+                const mid = savedMelodyId;
+                if (mid) {
+                  Promise.all([
+                    api.get(`/melodies/${mid}/files`),
+                    api.get(`/melodies/${mid}`),
+                  ]).then(([files, m]) => {
+                    setExistingFiles(files);
+                    if (m.url) setUrl(m.url);
+                  }).catch(() => {});
+                }
+              }
             }}
           />
           <BuildOnTheFlyModal
@@ -819,7 +839,23 @@ export default function MelodyForm() {
               setShowBuildOnTheFly(false);
               setAssignedBinaryName(archetype.name);
               if (!pid.trim() && archetype.pid) setPid(archetype.pid);
-              if (isEdit) loadMelody();
+              if (archetype.steps != null) updateInfo("steps", archetype.steps);
+              if (archetype.totalNotes != null) updateInfo("totalNotes", archetype.totalNotes);
+              if (archetype.archetype_csv != null) updateInfo("archetype_csv", archetype.archetype_csv);
+              if (isEdit) {
+                loadMelody();
+              } else {
+                const mid = savedMelodyId;
+                if (mid) {
+                  Promise.all([
+                    api.get(`/melodies/${mid}/files`),
+                    api.get(`/melodies/${mid}`),
+                  ]).then(([files, m]) => {
+                    setExistingFiles(files);
+                    if (m.url) setUrl(m.url);
+                  }).catch(() => {});
+                }
+              }
             }}
           />
         </>