diff --git a/src/bitsea/Float/ppcon/reset_ppcon_dataset.py b/src/bitsea/Float/ppcon/reset_ppcon_dataset.py
new file mode 100644
index 00000000..52e89431
--- /dev/null
+++ b/src/bitsea/Float/ppcon/reset_ppcon_dataset.py
@@ -0,0 +1,78 @@
+#!/usr/bin/env python3
+import argparse
+import os
+import shutil
+from pathlib import Path
+
+
+def argument() -> argparse.Namespace:
+    parser = argparse.ArgumentParser(
+        description="""Filter UPDATE_FILE_PATH rows and maintain PPCON copies from SUPERFLOAT.""")
+    parser.add_argument(
+        "--inputfile",
+        "-i",
+        required=True,
+        help="Path to the update file (input list of float files).",
+    )
+    parser.add_argument(
+        "--outputfile",
+        "-o",
+        required=True,
+        help="Path to the local filtered file to write.",
+    )
+    parser.add_argument(
+        "--inputdir",
+        "-I",
+        required=True,
+        help="Path to the directory containing the input superfloat files.",
+    )
+    parser.add_argument(
+        "--outputdir",
+        "-O",
+        required=True,
+        help="Path to the directory where the PPCON files will be maintained.",
+    )
+    return parser.parse_args()
+
+
+def _strip_prefix_once(value: str, prefix: str) -> str:
+    return value.replace(prefix, "", 1)
+
+
+def main():
+    args = argument()
+
+    update_file_path = Path(args.inputfile)
+    local_input = Path(args.outputfile)
+    superfloat_dir = Path(args.inputdir)
+    ppcon_dir = Path(args.outputdir)
+
+    local_input.parent.mkdir(parents=True, exist_ok=True)
+
+    with update_file_path.open("r", encoding="utf-8") as src, local_input.open("w", encoding="utf-8") as dst:
+        for raw_line in src:
+            line = raw_line.rstrip("\n")
+            if not line:
+                continue
+
+            filename = line.split(",", 1)[0]
+            v1 = _strip_prefix_once(filename, "coriolis/")
+            v2 = _strip_prefix_once(v1, "profiles/")
+            superfloat_file = superfloat_dir / v2
+
+            # Keep only lines that already exist in SUPERFLOAT.
+            if superfloat_file.is_file():
+                dst.write(line + "\n")
+
+                # Maintain PPCON copy of the file.
+
+                wmo = v2.split("/", 1)[0]
+                ppcon_wmo = ppcon_dir / wmo
+                ppcon_wmo.mkdir(parents=True, exist_ok=True)
+
+                dst_file = ppcon_dir / v2
+                dst_file.parent.mkdir(parents=True, exist_ok=True)
+                shutil.copy2(superfloat_file, dst_file)
+
+if __name__ == "__main__":
+   main()
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