diff --git a/validphys2/src/validphys/commondatawriter.py b/validphys2/src/validphys/commondatawriter.py
deleted file mode 100644
index 650df84cb..000000000
--- a/validphys2/src/validphys/commondatawriter.py
+++ /dev/null
@@ -1,84 +0,0 @@
-"""
-This module contains functions to write commondata and systypes
-tables to files
-"""
-
-
-def write_commondata_data(commondata, buffer):
-    """
-    write commondata table to buffer, this can be a memory map,
-    compressed archive or strings (using for instance StringIO)
-
-
-    Parameters
-    ----------
-
-    commondata : validphys.coredata.CommonData
-
-    buffer : memory map, compressed archive or strings
-            example: StringIO object
-
-
-    Example
-    -------
-    >>> from validphys.loader import Loader
-    >>> from io import StringIO
-
-    >>> l = Loader()
-    >>> cd = l.check_commondata("NMC").load_commondata_instance()
-    >>> sio = StringIO()
-    >>> write_commondata_data(cd,sio)
-    >>> print(sio.getvalue())
-
-    """
-    header = f"{commondata.setname} {commondata.nsys} {commondata.ndata}\n"
-    buffer.write(header)
-    commondata.commondata_table.to_csv(buffer, sep="\t", header=None)
-
-
-def write_commondata_to_file(commondata, path):
-    """
-    write commondata table to file
-    """
-    with open(path, "w") as file:
-        write_commondata_data(commondata, file)
-
-
-def write_systype_data(commondata, buffer):
-    """
-    write systype table to buffer, this can be a memory map,
-    compressed archive or strings (using for instance StringIO)
-
-
-    Parameters
-    ----------
-
-    commondata : validphys.coredata.CommonData
-
-    buffer : memory map, compressed archive or strings
-            example: StringIO object
-
-
-    Example
-    -------
-    >>> from validphys.loader import Loader
-    >>> from io import StringIO
-
-    >>> l = Loader()
-    >>> cd = l.check_commondata("NMC").load_commondata_instance()
-    >>> sio = StringIO()
-    >>> write_systype_data(cd,sio)
-    >>> print(sio.getvalue())
-
-    """
-    header = f"{commondata.nsys}\n"
-    buffer.write(header)
-    commondata.systype_table.to_csv(buffer, sep="\t", header=None)
-
-
-def write_systype_to_file(commondata, path):
-    """
-    write systype table to file
-    """
-    with open(path, "w") as file:
-        write_systype_data(commondata, file)
diff --git a/validphys2/src/validphys/coredata.py b/validphys2/src/validphys/coredata.py
index 2f95bc3af..edd6023e8 100644
--- a/validphys2/src/validphys/coredata.py
+++ b/validphys2/src/validphys/coredata.py
@@ -7,8 +7,6 @@
 import dataclasses
 from typing import Dict
 
-from validphys.commondatawriter import write_commondata_to_file, write_systype_to_file
-
 import numpy as np
 import pandas as pd
 
@@ -223,6 +221,7 @@ def with_cuts(self, cuts):
             self, ndata=newndata, commondata_table=new_commondata_table
         )
 
+
     @property
     def central_values(self):
         return self.commondata_table["data"]
@@ -303,18 +302,3 @@ def with_central_value(self, cv):
         tb = self.commondata_table.copy()
         tb["data"] = cv
         return dataclasses.replace(self, commondata_table=tb)
-
-    def export(self, path):
-        """Export the data, and error types
-         Use the same format as libNNPDF:
-
-        - A DATA_<dataset>.dat file with the dataframe of accepted points
-        - A systypes/STYPES_<dataset>.dat file with the error types
-        """
-
-        dat_path = path / f"DATA_{self.setname}.dat"
-        sys_path = path / "systypes" / f"SYSTYPE_{self.setname}_DEFAULT.dat"
-        sys_path.parent.mkdir(exist_ok=True)
-
-        write_systype_to_file(self, sys_path)
-        write_commondata_to_file(self, dat_path)
\ No newline at end of file