diff --git a/.github/workflows/chartpress.yaml b/.github/workflows/chartpress.yaml
index 641595c8..9c362d3f 100644
--- a/.github/workflows/chartpress.yaml
+++ b/.github/workflows/chartpress.yaml
@@ -6,6 +6,7 @@ on:
       - 'staging'
       - 'staging_deploy'
       - 'vtiles_admin'
+      - '1249_fix_split_adiff'
 jobs:
   build:
     runs-on: ubuntu-22.04
diff --git a/hetzner/osmcha/osmcha.base.yml b/hetzner/osmcha/osmcha.base.yml
index 062208ba..2258c485 100644
--- a/hetzner/osmcha/osmcha.base.yml
+++ b/hetzner/osmcha/osmcha.base.yml
@@ -90,7 +90,7 @@ services:
     command: sh /app/update.sh
 
   osmcha_ohmx_adiff:
-    image: ghcr.io/openhistoricalmap/ohmx-adiff-builder:0.0.1-0.dev.git.2836.hbee0465
+    image: ghcr.io/openhistoricalmap/ohmx-adiff-builder:0.0.1-0.dev.git.3256.h4c03a3a
     container_name: osmcha_ohmx_adiff_staging
     environment:
       - API_URL=https://api.openhistoricalmap.org
@@ -105,6 +105,11 @@ services:
     volumes:
       - ohmx_db:/data
       - ${HOME}/.aws:/root/.aws:ro
+      - /production/services/images/ohmx-adiff-builder/config.sh:/app/config.sh
+      - /production/services/images/ohmx-adiff-builder/functions.sh:/app/functions.sh
+      - /production/services/images/ohmx-adiff-builder/start.sh:/app/start.sh
+      - /production/services/images/ohmx-adiff-builder/process_min_range.sh:/app/process_min_range.sh
+      - /production/services/images/ohmx-adiff-builder/update.sh:/app/update.sh
     networks:
       - ohm_network
     cpus: '8.0'
diff --git a/images/ohmx-adiff-builder/Dockerfile b/images/ohmx-adiff-builder/Dockerfile
index bdac5488..26580736 100644
--- a/images/ohmx-adiff-builder/Dockerfile
+++ b/images/ohmx-adiff-builder/Dockerfile
@@ -2,11 +2,11 @@ FROM ghcr.io/bdon/osmexpress:latest
 
 ENV PATH="/root/.cargo/bin:${PATH}"
 
-RUN apk add --no-cache python3 py3-pip git bash xmlstarlet curl aws-cli
+RUN apk add --no-cache python3 py3-pip git bash xmlstarlet curl aws-cli py3-lxml
 
 RUN apk add --no-cache --virtual .build-deps build-base patch python3-dev make cmake zlib-dev expat-dev bzip2-dev boost-dev rust cargo && \
     \
-    pip install --break-system-packages osmx py3-requests osmium && \
+    pip install --break-system-packages osmx requests osmium && \
     \
     echo "--- Clonando y modificando osm-cli para OpenHistoricalMap ---" && \
     git clone https://github.com/jake-low/osm-cli.git /tmp/osm-cli && \
@@ -28,12 +28,12 @@ ENV PATH="/root/.local/bin:${PATH}"
 
 WORKDIR /app
 
-RUN echo "Update repo 08/08/2025"
+# RUN echo "Update repo 08/08/2025"
 
 RUN git clone https://github.com/OpenHistoricalMap/osmx-adiff-builder.git /app
 
-COPY start.sh .
-COPY update.sh .
+COPY *.sh .
+COPY *.py .
 
 RUN chmod +x /app/*.sh && chmod +x /app/*.py
 
diff --git a/images/ohmx-adiff-builder/config.sh b/images/ohmx-adiff-builder/config.sh
new file mode 100755
index 00000000..9136ec34
--- /dev/null
+++ b/images/ohmx-adiff-builder/config.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+# Configuration file for ohmx-adiff-builder
+
+export WORKDIR=/data
+
+## Database path
+export OSMX_DB_DIR=$WORKDIR/db/
+export OSMX_DB_PATH=$OSMX_DB_DIR/osmx.db
+export PLANET_FILE_PATH=$WORKDIR/planet.osm.pbf
+
+## URLs services
+export REPLICATION_URL="${REPLICATION_URL:-https://s3.amazonaws.com/planet.openhistoricalmap.org/replication/minute}"
+export API_URL=${API_URL:-https://api.openstreetmap.org}
+
+## Required directories (sin barra final para evitar dobles barras)
+export REPLICATION_ADIFFS_DIR=$WORKDIR/stage-data/replication-adiffs
+export SPLIT_ADIFFS_DIR=$WORKDIR/stage-data/split-adiffs
+export CHANGESET_DIR=$WORKDIR/stage-data/changesets
+export BUCKET_DIR=$WORKDIR/stage-data/bucket-data
+export UPLOAD_TRACK_FILE=$WORKDIR/stage-data/uploaded_files.md5
+export BAD_CHANGESETS_DIR=$WORKDIR/stage-data/bad_changesets
+
+## Sequence number
+export OSMX_INITIAL_SEQNUM=${OSMX_INITIAL_SEQNUM:-0}
+
+## Process diff files from the last 60 min
+export FILTER_ADIFF_FILES=60
diff --git a/images/ohmx-adiff-builder/functions.sh b/images/ohmx-adiff-builder/functions.sh
new file mode 100755
index 00000000..8ac8ea7a
--- /dev/null
+++ b/images/ohmx-adiff-builder/functions.sh
@@ -0,0 +1,176 @@
+#!/bin/bash
+# Common functions for ohmx-adiff-builder scripts
+
+upload_diff_files() {
+  # Optional parameter: "once" to execute only once, any other value or empty for continuous loop
+  local mode="${1:-loop}"
+  
+  mkdir -p "$(dirname "$UPLOAD_TRACK_FILE")"
+  touch "$UPLOAD_TRACK_FILE"
+
+  declare -A uploaded_md5s
+  while read -r line; do
+    file=$(echo "$line" | awk '{print $1}')
+    hash=$(echo "$line" | awk '{print $2}')
+    uploaded_md5s["$file"]="$hash"
+  done < "$UPLOAD_TRACK_FILE"
+
+  # Function to process files once
+  process_upload() {
+    echo "Uploading files at $(date)..."
+    # Search in bucket-data (where compressed changeset files are)
+    # and also in bucket-data/replication/minute (where replication files are)
+    # Use process substitution to avoid subshell
+    while IFS= read -r filepath; do
+      [ -z "$filepath" ] || [ ! -f "$filepath" ] && continue
+      filename=$(basename "$filepath")
+      current_md5=$(md5sum "$filepath" | awk '{print $1}')
+
+      if [[ -n "${uploaded_md5s[$filename]}" ]]; then
+        if [[ "${uploaded_md5s[$filename]}" == "$current_md5" ]]; then
+          echo "Skipping unchanged: $filename"
+          continue
+        else
+          echo "File changed: $filename — reuploading"
+        fi
+      else
+        echo "New file: $filename — uploading"
+      fi
+
+      aws s3 cp "$filepath" "s3://$AWS_S3_BUCKET/ohm-augmented-diffs/changesets/$filename" \
+        --content-type "application/xml" \
+        --content-encoding "gzip" && \
+      uploaded_md5s["$filename"]="$current_md5"
+    done < <(find "$BUCKET_DIR" -type f -name '*.adiff' -mmin -60 2>/dev/null)
+
+    # Update control file
+    : > "$UPLOAD_TRACK_FILE"
+    for fname in "${!uploaded_md5s[@]}"; do
+      echo "$fname ${uploaded_md5s[$fname]}" >> "$UPLOAD_TRACK_FILE"
+    done
+  }
+
+  if [[ "$mode" == "once" ]]; then
+    # Execute only once
+    process_upload
+  else
+    # Execute in continuous loop
+    while true; do
+      process_upload
+      sleep 60
+    done
+  fi
+}
+
+# Function to download and generate adiff files for a seqno range
+# Downloads .osc files from replication server, generates .adiff files, and updates osmx database
+download_and_generate_adiffs() {
+  local seqno_min=$1
+  local seqno_max=$2
+  
+  echo "Downloading and generating adiffs for range: $seqno_min - $seqno_max"
+  
+  eval "$(mise activate bash --shims)"
+  
+  for seqno in $(seq "$seqno_min" "$seqno_max"); do
+    echo "Processing seqno: $seqno"
+    
+    # Get the replication URL for this seqno
+    # Format: seqno is padded to 9 digits, split into 3 parts: XXX/XXX/XXX
+    seqno_padded=$(printf "%09d" "$seqno")
+    part1=$(echo "$seqno_padded" | cut -c1-3)
+    part2=$(echo "$seqno_padded" | cut -c4-6)
+    part3=$(echo "$seqno_padded" | cut -c7-9)
+    url="${REPLICATION_URL}/${part1}/${part2}/${part3}.osc.gz"
+    
+    # Download and decompress the .osc file
+    if ! curl -sL "$url" | gzip -d > "${seqno}.osc" 2>/dev/null; then
+      echo "Warning: Failed to download seqno $seqno from $url, skipping..."
+      continue
+    fi
+    
+    # Check if .osc file was downloaded successfully
+    if [ ! -f "${seqno}.osc" ] || [ ! -s "${seqno}.osc" ]; then
+      echo "Warning: Empty or missing .osc file for seqno $seqno, skipping..."
+      continue
+    fi
+    
+    # Generate augmented diff
+    tmpfile=$(mktemp)
+    if ! python augmented_diff.py "$OSMX_DB_PATH" "${seqno}.osc" | xmlstarlet format > "$tmpfile" 2>/dev/null; then
+      echo "Warning: Failed to generate adiff for seqno $seqno, skipping..."
+      rm -f "${seqno}.osc" "$tmpfile"
+      continue
+    fi
+    
+    # Move adiff to replication directory
+    mkdir -p "$REPLICATION_ADIFFS_DIR"
+    mv "$tmpfile" "$REPLICATION_ADIFFS_DIR/${seqno}.adiff"
+    
+    # Get timestamp from replication state (if available) or use current time
+    timestamp=$(date -u +%Y-%m-%dT%H:%M:%SZ)
+    
+    # Update osmx database
+    if osmx update "$OSMX_DB_PATH" "${seqno}.osc" "$seqno" "$timestamp" --commit 2>/dev/null; then
+      echo "Successfully processed seqno $seqno"
+    else
+      echo "Warning: Failed to update osmx database for seqno $seqno"
+    fi
+    
+    # Clean up .osc file
+    rm -f "${seqno}.osc"
+  done
+}
+
+# Function to process adiff files by sequence number (seqno) range
+# Splits adiffs, moves them to bucket-data, merges split adiffs, uploads, and cleans up
+process_adiff_range() {
+  local seqno_start=$1
+  local seqno_end=$2
+  
+  mkdir -p "$REPLICATION_ADIFFS_DIR" "$SPLIT_ADIFFS_DIR" "$CHANGESET_DIR" "$BUCKET_DIR/replication/minute"
+  
+  echo "Processing range: $seqno_start - $seqno_end"
+  
+  # Find files in the specified range
+  for seqno in $(seq "$seqno_start" "$seqno_end"); do
+    adiff_file="$REPLICATION_ADIFFS_DIR/${seqno}.adiff"
+    echo "Processing adiff file: $adiff_file"
+    [ ! -f "$adiff_file" ] && continue
+    
+    seqno=$(basename -s .adiff "$adiff_file")
+    tmpdir=$(mktemp -d)
+    
+    # split the adiff file
+    python split_adiff.py "$adiff_file" "$tmpdir"
+    
+    for file in "$tmpdir"/*.adiff; do
+      [ ! -f "$file" ] && continue
+      changeset=$(basename -s .adiff "$file")
+      mkdir -p "${SPLIT_ADIFFS_DIR}/${changeset}"
+      mv "$file" "${SPLIT_ADIFFS_DIR}/${changeset}/${seqno}.adiff"
+    done
+    
+    rm -rf "$tmpdir"
+    
+    # move the adiff file to the output directory. this means it won't be processed
+    # again in the future and can be uploaded to R2 and deleted locally.
+    # compress it first
+    tmpfile=$(mktemp)
+    gzip -c < "$adiff_file" > "$tmpfile"
+    # move it into place atomically
+    mkdir -p "${BUCKET_DIR}/replication/minute"
+    mv "$tmpfile" "${BUCKET_DIR}/replication/minute/$(basename "$adiff_file")"
+    rm "$adiff_file"
+  done
+  
+  # merge all our split files, potentially updating existing changesets.
+  # this is done using a makefile script in order to avoid needlessly reprocessing
+  # changesets whose set of input (split-adiffs/) files haven't changed.
+  [ -f "merge.mk" ] && make -f merge.mk || true
+  
+  upload_diff_files "once"
+  
+  # clean up old stage-data that we don't need anymore
+  [ -f "gc.sh" ] && ./gc.sh "$SPLIT_ADIFFS_DIR" "$CHANGESET_DIR" || true
+}
diff --git a/images/ohmx-adiff-builder/process_min_range.sh b/images/ohmx-adiff-builder/process_min_range.sh
new file mode 100755
index 00000000..ddba76a7
--- /dev/null
+++ b/images/ohmx-adiff-builder/process_min_range.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+# Usage: ./process_min_range.sh SEQNO_START SEQNO_END [generate_adiffs|process_adiffs|both]
+# Example: ./process_min_range.sh 1884610 1884615 generate_adiffs
+#          ./process_min_range.sh 1884610 1884615 process_adiffs
+
+source "config.sh"
+source "functions.sh"
+
+min_seqno="$1"
+max_seqno="$2"
+mode="$3"
+
+if [ "$mode" == "generate_adiffs" ]; then
+    download_and_generate_adiffs "$min_seqno" "$max_seqno"
+    process_adiff_range "$min_seqno" "$max_seqno"
+elif [ "$mode" == "process_adiffs" ]; then
+    process_adiff_range "$min_seqno" "$max_seqno"
+fi
+