diff --git a/qcportal/qcportal/record_models.py b/qcportal/qcportal/record_models.py
index cd1de8070..bbfaa514c 100644
--- a/qcportal/qcportal/record_models.py
+++ b/qcportal/qcportal/record_models.py
@@ -108,38 +108,35 @@ class Config:
 
     output_type: OutputTypeEnum = Field(..., description="The type of output this is (stdout, error, etc)")
     compression_type: CompressionEnum = Field(CompressionEnum.none, description="Compression method (such as lzma)")
+    data_: Optional[bytes] = None
 
-    data_url_: Optional[str] = None
-    compressed_data_: Optional[bytes] = None
-    decompressed_data_: Optional[Any] = None
-
+    _data_url: Optional[str] = PrivateAttr(None)
     _client: Any = PrivateAttr(None)
 
     def propagate_client(self, client, history_base_url):
         self._client = client
-        self.data_url_ = f"{history_base_url}/outputs/{self.output_type.value}/data"
+        self._data_url = f"{history_base_url}/outputs/{self.output_type.value}/data"
 
     def _fetch_raw_data(self):
-        if self.compressed_data_ is None and self.decompressed_data_ is None:
-            cdata, ctype = self._client.make_request(
-                "get",
-                self.data_url_,
-                Tuple[bytes, CompressionEnum],
-            )
+        if self.data_ is not None:
+            return
+
+        if self._client is None:
+            raise RuntimeError("No client to fetch output data from")
 
-            self.compression_type = ctype
-            self.compressed_data_ = cdata
+        cdata, ctype = self._client.make_request(
+            "get",
+            self._data_url,
+            Tuple[bytes, CompressionEnum],
+        )
+
+        assert self.compression_type == ctype
+        self.data_ = cdata
 
     @property
     def data(self) -> Any:
         self._fetch_raw_data()
-
-        # Decompress, then remove compressed form
-        if self.decompressed_data_ is None:
-            self.decompressed_data_ = decompress(self.compressed_data_, self.compression_type)
-            self.compressed_data_ = None
-
-        return self.decompressed_data_
+        return decompress(self.data_, self.compression_type)
 
 
 class ComputeHistory(BaseModel):
@@ -217,38 +214,35 @@ class Config:
 
     name: str = Field(..., description="Name of the file")
     compression_type: CompressionEnum = Field(..., description="Compression method (such as lzma)")
+    data_: Optional[bytes] = None
 
-    data_url_: Optional[str] = None
-    compressed_data_: Optional[bytes] = None
-    decompressed_data_: Optional[Any] = None
-
+    _data_url: Optional[str] = PrivateAttr(None)
     _client: Any = PrivateAttr(None)
 
     def propagate_client(self, client, record_base_url):
         self._client = client
-        self.data_url_ = f"{record_base_url}/native_files/{self.name}/data"
+        self._data_url = f"{record_base_url}/native_files/{self.name}/data"
 
     def _fetch_raw_data(self):
-        if self.compressed_data_ is None and self.decompressed_data_ is None:
-            cdata, ctype = self._client.make_request(
-                "get",
-                self.data_url_,
-                Tuple[bytes, CompressionEnum],
-            )
+        if self.data_ is not None:
+            return
+
+        if self._client is None:
+            raise RuntimeError("No client to fetch native file data from")
 
-            assert self.compression_type == ctype
-            self.compressed_data_ = cdata
+        cdata, ctype = self._client.make_request(
+            "get",
+            self._data_url,
+            Tuple[bytes, CompressionEnum],
+        )
+
+        assert self.compression_type == ctype
+        self.data_ = cdata
 
     @property
     def data(self) -> Any:
         self._fetch_raw_data()
-
-        # Decompress, then remove compressed form
-        if self.decompressed_data_ is None:
-            self.decompressed_data_ = decompress(self.compressed_data_, self.compression_type)
-            self.compressed_data_ = None
-
-        return self.decompressed_data_
+        return decompress(self.data_, self.compression_type)
 
     def save_file(
         self, directory: str, new_name: Optional[str] = None, keep_compressed: bool = False, overwrite: bool = False
diff --git a/qcportal/qcportal/singlepoint/record_models.py b/qcportal/qcportal/singlepoint/record_models.py
index b582e759a..319b5a82f 100644
--- a/qcportal/qcportal/singlepoint/record_models.py
+++ b/qcportal/qcportal/singlepoint/record_models.py
@@ -66,39 +66,36 @@ class Config:
         extra = Extra.forbid
 
     compression_type: CompressionEnum
+    data_: Optional[bytes] = None
 
-    data_url_: Optional[str] = None
-    compressed_data_: Optional[bytes] = None
-    decompressed_data_: Optional[WavefunctionProperties] = None
-
+    _data_url: Optional[str] = PrivateAttr(None)
     _client: Any = PrivateAttr(None)
 
     def propagate_client(self, client, record_base_url):
         self._client = client
-        self.data_url_ = f"{record_base_url}/wavefunction/data"
+        self._data_url = f"{record_base_url}/wavefunction/data"
 
     def _fetch_raw_data(self):
-        if self.compressed_data_ is None and self.decompressed_data_ is None:
-            cdata, ctype = self._client.make_request(
-                "get",
-                self.data_url_,
-                Tuple[bytes, CompressionEnum],
-            )
+        if self.data_ is not None:
+            return
+
+        if self._client is None:
+            raise RuntimeError("No client to fetch wavefunction data from")
+
+        cdata, ctype = self._client.make_request(
+            "get",
+            self._data_url,
+            Tuple[bytes, CompressionEnum],
+        )
 
-            assert self.compression_type == ctype
-            self.compressed_data_ = cdata
+        assert self.compression_type == ctype
+        self.data_ = cdata
 
     @property
     def data(self) -> WavefunctionProperties:
         self._fetch_raw_data()
-
-        # Decompress, then remove compressed form
-        if self.decompressed_data_ is None:
-            wfn_dict = decompress(self.compressed_data_, self.compression_type)
-            self.decompressed_data_ = WavefunctionProperties(**wfn_dict)
-            self.compressed_data_ = None
-
-        return self.decompressed_data_
+        wfn_dict = decompress(self.data_, self.compression_type)
+        return WavefunctionProperties(**wfn_dict)
 
 
 class SinglepointRecord(BaseRecord):