diff --git a/backend/routers/projects.py b/backend/routers/projects.py
index 9de68d8..b974ded 100644
--- a/backend/routers/projects.py
+++ b/backend/routers/projects.py
@@ -3651,13 +3651,21 @@ async def upload_all_project_data(
         group_file_count = 0
 
         for fname, fbytes in file_list:
-            file_type = _bulk_classify_file(fname)
             fname_lower = fname.lower()
-            if fname_lower.endswith(".rnd"):
-                if "_leq_" in fname_lower:
-                    leq_count += 1
-                elif "_lp" in fname_lower:
-                    lp_count += 1
+            # For NL-43/NL-53 devices (not NL-32), skip Lp RND files — they are
+            # not needed for reports and only add noise. AU2/NL-32 files don't
+            # use this naming convention so they are unaffected.
+            if (
+                fname_lower.endswith(".rnd")
+                and "_lp" in fname_lower
+                and _bulk_device_model != "NL-32"
+            ):
+                lp_count += 1
+                continue
+
+            file_type = _bulk_classify_file(fname)
+            if fname_lower.endswith(".rnd") and "_leq_" in fname_lower:
+                leq_count += 1
 
             dest = output_dir / fname
             dest.write_bytes(fbytes)