diff --git a/public/userarea/export_to_lims.php b/public/userarea/export_to_lims.php
index 75cfb32..5ebdbba 100644
--- a/public/userarea/export_to_lims.php
+++ b/public/userarea/export_to_lims.php
@@ -199,19 +199,17 @@ try {
     $photos = $stmtPhotos->fetchAll(PDO::FETCH_ASSOC);
 
 
-    // 🔹 STEP 6.2: Upload photos to each Campione
-    // Photos document the overall test, so all photos are attached to every campione.
-
+    // 🔹 STEP 6.2: Upload photos to the first (main) Campione only
     $photosUploaded = 0;
     $logContentPhotos = "Photos for CommessaWeb {$commessaId} (iddatadb={$iddatadb}):\n";
     $logContentPhotos .= "Total photos found: " . count($photos) . ", campioni: " . count($campioni) . "\n\n";
 
     if (!empty($campioni) && !empty($photos)) {
-        foreach ($campioni as $campione) {
-            $campioneId = (int)($campione['IdCampione'] ?? 0);
-            if ($campioneId <= 0) continue;
+        $mainCampione = $campioni[0];
+        $campioneId = (int)($mainCampione['IdCampione'] ?? 0);
 
-            $logContentPhotos .= "=== Campione {$campioneId} ===\n";
+        if ($campioneId > 0) {
+            $logContentPhotos .= "=== Campione {$campioneId} (main) ===\n";
 
             foreach ($photos as $photo) {
                 $photoPath = $uploadDir . '/' . ltrim($photo['file_path'], './');
@@ -231,6 +229,8 @@ try {
                 $logContentPhotos .= "RESPONSE:\n" . json_encode($photoResult, JSON_PRETTY_PRINT) . "\n\n---\n";
                 $photosUploaded++;
             }
+        } else {
+            $logContentPhotos .= "SKIP: main campione has invalid IdCampione\n";
         }
     } elseif (empty($campioni)) {
         $logContentPhotos .= "SKIP: no campioni created, cannot upload photos\n";