diff --git a/.github/workflows/test_notebooks.yaml b/.github/workflows/test_notebooks.yaml
index ff3f0e90..bd1462f4 100644
--- a/.github/workflows/test_notebooks.yaml
+++ b/.github/workflows/test_notebooks.yaml
@@ -58,8 +58,10 @@ jobs:
           uv pip install 'setuptools<68'
           uv pip install -e ".[dev,test]"
           uv pip install mt_metadata[obspy]
-          uv pip install "mt_metadata[obspy]"
-          uv pip install mth5
+          # uv pip install "mt_metadata[obspy] @ git+https://github.com/kujaku11/mt_metadata@patches"
+          # uv pip install "mt_metadata[obspy]"
+          # uv pip install mth5
+          uv pip install git+https://github.com/kujaku11/mth5@split_io
           uv pip install git+https://github.com/kujaku11/mth5_test_data.git
           # Explicitly include nbconvert & ipykernel
           uv pip install jupyter nbconvert nbformat ipykernel
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index da755086..6677ce2a 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -54,9 +54,7 @@ jobs:
           # uv pip install "mt_metadata[obspy] @ git+https://github.com/kujaku11/mt_metadata.git"
           # uv pip install git+https://github.com/kujaku11/mth5.git
           uv pip install "mt_metadata[obspy]"
-          uv pip install mth5
-          
-          
+          uv pip install git+https://github.com/kujaku11/mth5.git@split_io
           # uv pip install mth5
           uv pip install git+https://github.com/kujaku11/mth5_test_data.git
           # Explicitly include nbconvert & ipykernel
diff --git a/aurora/time_series/frequency_band_helpers.py b/aurora/time_series/frequency_band_helpers.py
index c7eb9a03..3c9d171c 100644
--- a/aurora/time_series/frequency_band_helpers.py
+++ b/aurora/time_series/frequency_band_helpers.py
@@ -2,14 +2,13 @@
     This module contains functions that are associated with time series of Fourier coefficients
     TODO: Move these methods to mth5.processing.spectre.frequency_band_helpers
 """
-from loguru import logger
-from mt_metadata.processing.aurora import (
-    DecimationLevel as AuroraDecimationLevel,
-)
-from mt_metadata.processing.aurora import Band
-from mth5.timeseries.spectre.spectrogram import extract_band
 from typing import Optional, Tuple
+
 import xarray as xr
+from loguru import logger
+from mt_metadata.processing.aurora import Band
+from mt_metadata.processing.aurora import DecimationLevel as AuroraDecimationLevel
+from mt_timeseries.spectre.spectrogram import extract_band
 
 
 def get_band_for_tf_estimate(
diff --git a/docs/examples/operate_aurora.ipynb b/docs/examples/operate_aurora.ipynb
index c52312e5..4dcc0040 100644
--- a/docs/examples/operate_aurora.ipynb
+++ b/docs/examples/operate_aurora.ipynb
@@ -2968,7 +2968,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 35,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -2983,12 +2983,12 @@
     }
    ],
    "source": [
-    "tf_cls.write(fn=\"emtfxml_test.xml\", file_type=\"emtfxml\")"
+    "tf_cls.write(\"emtfxml_test.xml\", file_type=\"emtfxml\")"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 36,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -3016,12 +3016,12 @@
     }
    ],
    "source": [
-    "tf_cls.write(fn=\"emtfxml_test.edi\", file_type=\"edi\")"
+    "tf_cls.write(\"emtfxml_test.edi\", file_type=\"edi\")"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 37,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -3036,7 +3036,7 @@
     }
    ],
    "source": [
-    "tf_cls.write(fn=\"emtfxml_test.zss\", file_type=\"zmm\")"
+    "tf_cls.write(\"emtfxml_test.zss\", file_type=\"zmm\")"
    ]
   },
   {
diff --git a/docs/tutorials/process_cas04_multiple_station.ipynb b/docs/tutorials/process_cas04_multiple_station.ipynb
index 1c1aaf65..763cccc6 100644
--- a/docs/tutorials/process_cas04_multiple_station.ipynb
+++ b/docs/tutorials/process_cas04_multiple_station.ipynb
@@ -3033,7 +3033,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 19,
+   "execution_count": null,
    "id": "2ee6e117-c7e1-40ba-9981-5f2a189e404a",
    "metadata": {},
    "outputs": [
@@ -3049,9 +3049,9 @@
     }
    ],
    "source": [
-    "tf_cls.write(fn=f\"{tf_file_base}.xml\", file_type=\"emtfxml\")\n",
-    "tf_cls.write(fn=f\"{tf_file_base}.edi\", file_type=\"edi\")\n",
-    "tf_cls.write(fn=f\"{tf_file_base}.zrr\", file_type=\"zrr\")"
+    "tf_cls.write(f\"{tf_file_base}.xml\", file_type=\"emtfxml\")\n",
+    "tf_cls.write(f\"{tf_file_base}.edi\", file_type=\"edi\")\n",
+    "tf_cls.write(f\"{tf_file_base}.zrr\", file_type=\"zrr\")"
    ]
   },
   {
@@ -7048,7 +7048,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 45,
+   "execution_count": null,
    "id": "358195b0",
    "metadata": {},
    "outputs": [
@@ -7077,7 +7077,7 @@
     }
    ],
    "source": [
-    "tf.write(fn=\"CAS04_rrNVR08.edi\", file_type=\"edi\")"
+    "tf.write(\"CAS04_rrNVR08.edi\", file_type=\"edi\")"
    ]
   }
  ],