diff --git a/scripts/export_lower_resolution.py b/scripts/export_lower_resolution.py
index f60de4b..5e2d334 100644
--- a/scripts/export_lower_resolution.py
+++ b/scripts/export_lower_resolution.py
@@ -1,5 +1,6 @@
 import argparse
 import os
+import warnings
 
 import numpy as np
 import pandas as pd
@@ -7,7 +8,6 @@
 import zarr
 
 from flamingo_tools.s3_utils import get_s3_path, BUCKET_NAME, SERVICE_ENDPOINT
-# from skimage.segmentation import relabel_sequential
 
 
 def filter_component(fs, segmentation, cochlea, seg_name, components):
@@ -19,10 +19,12 @@ def filter_component(fs, segmentation, cochlea, seg_name, components):
     # Then we get the ids for the components and us them to filter the segmentation.
     component_mask = np.isin(table.component_labels.values, components)
     keep_label_ids = table.label_id.values[component_mask].astype("int64")
+    if max(keep_label_ids) > np.iinfo("uint16").max:
+        warnings.warn(f"Label ID exceeds maximum of data type 'uint16': {np.iinfo('uint16').max}.")
+
     filter_mask = ~np.isin(segmentation, keep_label_ids)
     segmentation[filter_mask] = 0
-
-    # segmentation, _, _ = relabel_sequential(segmentation)
+    segmentation = segmentation.astype("uint16")
     return segmentation
 
 
@@ -41,7 +43,7 @@ def export_lower_resolution(args):
         s3_store, fs = get_s3_path(internal_path, bucket_name=BUCKET_NAME, service_endpoint=SERVICE_ENDPOINT)
         with zarr.open(s3_store, mode="r") as f:
             data = f[input_key][:]
-        print(data.shape)
+
         if args.filter_by_components is not None:
             data = filter_component(fs, data, args.cochlea, channel, args.filter_by_components)
         if args.binarize:
diff --git a/scripts/export_synapse_detections.py b/scripts/export_synapse_detections.py
index 52fee04..a555577 100644
--- a/scripts/export_synapse_detections.py
+++ b/scripts/export_synapse_detections.py
@@ -12,7 +12,7 @@
 from tqdm import tqdm
 
 
-def export_synapse_detections(cochlea, scale, output_folder, synapse_name, reference_ihcs, max_dist, radius):
+def export_synapse_detections(cochlea, scale, output_folder, synapse_name, reference_ihcs, max_dist, radius, id_offset):
     s3 = create_s3_target()
 
     content = s3.open(f"{BUCKET_NAME}/{cochlea}/dataset.json", mode="r", encoding="utf-8")
@@ -53,14 +53,18 @@ def export_synapse_detections(cochlea, scale, output_folder, synapse_name, refer
     coordinates /= (2 ** scale)
     coordinates = np.round(coordinates, 0).astype("int")
 
+    ihc_ids = syn_table["matched_ihc"].values
+
     # Create the output.
     output = np.zeros(shape, dtype="uint16")
     mask = ball(radius).astype(bool)
 
-    for coord in tqdm(coordinates, desc="Writing synapses to volume"):
+    for coord, matched_ihc in tqdm(
+        zip(coordinates, ihc_ids), total=len(coordinates), desc="Writing synapses to volume"
+    ):
         bb = tuple(slice(c - radius, c + radius + 1) for c in coord)
         try:
-            output[bb][mask] = 1
+            output[bb][mask] = matched_ihc + id_offset
         except IndexError:
             print("Index error for", coord)
             continue
@@ -68,7 +72,10 @@ def export_synapse_detections(cochlea, scale, output_folder, synapse_name, refer
     # Write the output.
     out_folder = os.path.join(output_folder, cochlea, f"scale{scale}")
     os.makedirs(out_folder, exist_ok=True)
-    out_path = os.path.join(out_folder, f"{synapse_name}.tif")
+    if id_offset != 0:
+        out_path = os.path.join(out_folder, f"{synapse_name}_offset{id_offset}.tif")
+    else:
+        out_path = os.path.join(out_folder, f"{synapse_name}.tif")
     print("Writing synapses to", out_path)
     tifffile.imwrite(out_path, output, bigtiff=True, compression="zlib")
 
@@ -78,16 +85,18 @@ def main():
     parser.add_argument("--cochlea", "-c", required=True)
     parser.add_argument("--scale", "-s", type=int, required=True)
     parser.add_argument("--output_folder", "-o", required=True)
-    parser.add_argument("--synapse_name", default="synapse_v3_ihc_v4")
-    parser.add_argument("--reference_ihcs", default="IHC_v4")
+    parser.add_argument("--synapse_name", default="synapse_v3_ihc_v4b")
+    parser.add_argument("--reference_ihcs", default="IHC_v4b")
     parser.add_argument("--max_dist", type=float, default=3.0)
     parser.add_argument("--radius", type=int, default=3)
+    parser.add_argument("--id_offset", type=int, default=0)
     args = parser.parse_args()
 
     export_synapse_detections(
         args.cochlea, args.scale, args.output_folder,
         args.synapse_name, args.reference_ihcs,
-        args.max_dist, args.radius
+        args.max_dist, args.radius,
+        args.id_offset,
     )