diff --git a/build-tools/cncluster b/build-tools/cncluster
index 36cac4a388..05addd4b0e 100755
--- a/build-tools/cncluster
+++ b/build-tools/cncluster
@@ -1735,8 +1735,8 @@ subcommand_whitelist[backup_nodes]='Backup one or more CN nodes in the cluster'
 function subcmd_backup_nodes() {
     _cluster_must_exist
 
-    if [ "$#" -lt 2 ]; then
-       echo "Usage: $0 <migration_id> <internal_stack> [node...]"
+    if [ "$#" -lt 1 ]; then
+       echo "Usage: $0 <migration_id> [node...]"
        exit 1
     fi
 
@@ -1744,14 +1744,7 @@ function subcmd_backup_nodes() {
         echo "Usage: $0 <migration_id> [node...]"
         _error "<migration_id> must be a positive integer"
     fi
-
-    if [[ "$2" != "true" && "$2" != "false" ]]; then
-        echo "Usage: $0 <internal_stack> [node...]"
-        _error "<internal_stack> must be either \"true\" or \"false\""
-    fi
-
     migration_id=$1
-    internal_stack=$2
 
     if [ $# -eq 2 ]; then
         nodes="sv-1 sv-2 sv-3 sv-da-1 validator1 splitwell"
@@ -1764,11 +1757,11 @@ function subcmd_backup_nodes() {
         case "$node" in
             sv-1|sv-2|sv-3|sv-4|sv-da-1)
                 _info "Backing up sv node $node"
-                SPLICE_SV=$node SPLICE_MIGRATION_ID=$migration_id "$SPLICE_ROOT"/cluster/scripts/node-backup.sh sv "$node" "$migration_id" "$internal_stack"
+                SPLICE_SV=$node SPLICE_MIGRATION_ID=$migration_id "$SPLICE_ROOT"/cluster/scripts/node-backup.sh sv "$node" "$migration_id"
                 ;;
             validator1|splitwell)
                 _info "Backing up validator node $node"
-                SPLICE_SV=$node SPLICE_MIGRATION_ID=$migration_id "$SPLICE_ROOT"/cluster/scripts/node-backup.sh validator "$node" "$migration_id" "$internal_stack"
+                SPLICE_SV=$node SPLICE_MIGRATION_ID=$migration_id "$SPLICE_ROOT"/cluster/scripts/node-backup.sh validator "$node" "$migration_id"
                 ;;
             *)
                 _error "Unknown node $node"
@@ -1805,16 +1798,15 @@ function subcmd_restore_node() {
 
     node="${1-}"
     migration_id="${2-}"
-    internal_stack="${3-}"
-    backup_run_id="${4-}"
+    backup_run_id="${3-}"
 
     if [ -z "$node" ] || [ -z "$migration_id" ]; then
-        _error "Usage: $SCRIPTNAME restore_node <namespace_name> <migration_id> <internal_stack> [<backup_run_id>]"
+        _error "Usage: $SCRIPTNAME restore_node <namespace_name> <migration_id> [<backup_run_id>]"
     fi
 
     if [ -z "$backup_run_id" ]; then
         _info "No backup run_id given, looking for the latest full backup"
-        backup_run_id=$(SPLICE_SV=$node SPLICE_MIGRATION_ID=$migration_id "$SPLICE_ROOT"/cluster/scripts/find-recent-backup.sh "$node" "$migration_id" "$internal_stack")
+        backup_run_id=$(SPLICE_SV=$node SPLICE_MIGRATION_ID=$migration_id "$SPLICE_ROOT"/cluster/scripts/find-recent-backup.sh "$node" "$migration_id")
         if [[ -z "$backup_run_id" || "$backup_run_id" == "null" ]]; then
             _error "No recent backup found for $node"
         fi
@@ -1831,11 +1823,11 @@ function subcmd_restore_node() {
             _info "Silencing SV report creation alerts for $sv_name for 1 hour"
             subcmd_silence_grafana_alerts "1 hour" "alertname=Report Creation Time Lag" "report_publisher=$sv_name"
             _info "Restoring sv node $node"
-            SPLICE_SV=$node SPLICE_MIGRATION_ID=$migration_id "$SPLICE_ROOT"/cluster/scripts/node-restore.sh $force "$node" "$migration_id" "$backup_run_id" "$internal_stack" cometbft sequencer participant mediator cn-apps
+            SPLICE_SV=$node SPLICE_MIGRATION_ID=$migration_id "$SPLICE_ROOT"/cluster/scripts/node-restore.sh $force "$node" "$migration_id" "$backup_run_id" cometbft sequencer participant mediator cn-apps
             ;;
         validator1|splitwell)
             _info "Restoring validator node $node"
-            SPLICE_SV=$node SPLICE_MIGRATION_ID=$migration_id "$SPLICE_ROOT"/cluster/scripts/node-restore.sh $force "$node" "$migration_id" "$backup_run_id" "$internal_stack" participant validator
+            SPLICE_SV=$node SPLICE_MIGRATION_ID=$migration_id "$SPLICE_ROOT"/cluster/scripts/node-restore.sh $force "$node" "$migration_id" "$backup_run_id" participant validator
             ;;
         *)
             _error "Unknown node $node"
diff --git a/cluster/scripts/find-recent-backup.sh b/cluster/scripts/find-recent-backup.sh
index 9a2a40dabf..823b69fc16 100755
--- a/cluster/scripts/find-recent-backup.sh
+++ b/cluster/scripts/find-recent-backup.sh
@@ -11,7 +11,7 @@ source "${TOOLS_LIB}/libcli.source"
 source "${SPLICE_ROOT}/cluster/scripts/utils.source"
 
 function usage() {
-  _info "Usage: $0 <namespace> <migration_id> <internal (true|false)>"
+  _info "Usage: $0 <namespace> <migration_id>"
 }
 
 function is_full_backup_kube() {
@@ -64,7 +64,6 @@ function latest_full_backup_run_id_gcloud() {
   local migration_id=$2
   local is_sv=$3
   local expected_components=$4
-  local internal=$5
   local num_components
   num_components=$(echo "$expected_components" | wc -w)
   local stack
@@ -72,8 +71,8 @@ function latest_full_backup_run_id_gcloud() {
   declare -A run_ids_dict
 
   for component in $expected_components; do
-    stack=$(get_stack_for_namespace_component "$namespace" "$component" "$internal")
-    instance="$(create_component_instance "$component" "$migration_id" "$namespace" "$internal")"
+    stack=$(get_stack_for_namespace_component "$namespace" "$component")
+    instance="$(create_component_instance "$component" "$migration_id" "$namespace")"
     local full_component_instance="$namespace-$instance-pg"
 
     local cloudsql_id
@@ -110,27 +109,26 @@ function latest_full_backup_run_id_gcloud() {
 }
 
 function main() {
-  if [ "$#" -lt 3 ]; then
+  if [ "$#" -lt 2 ]; then
       usage
       exit 1
   fi
 
   local namespace=$1
   local migration_id=$2
-  local internal=$3
 
   case "$namespace" in
       sv-1|sv-2|sv-3|sv-4|sv-da-1)
           is_sv=true
           full_instance="$namespace-cn-apps-pg"
           expected_components="cn-apps sequencer participant mediator"
-          stack=$(get_stack_for_namespace_component "$namespace" "cn-apps" "$internal")
+          stack=$(get_stack_for_namespace_component "$namespace" "cn-apps")
           ;;
       *)
           is_sv=false
           full_instance="$namespace-validator-pg"
           expected_components="validator participant"
-          stack=$(get_stack_for_namespace_component "$namespace" "participant" "$internal")
+          stack=$(get_stack_for_namespace_component "$namespace" "participant")
           ;;
   esac
 
@@ -140,7 +138,7 @@ function main() {
     backup_run_id=$(latest_full_backup_run_id_kube "$namespace" "$migration_id" "$is_sv" "$expected_components")
     echo "$backup_run_id"
   elif [ "$type" == "canton:cloud:postgres" ]; then
-    backup_run_id=$(latest_full_backup_run_id_gcloud "$namespace" "$migration_id" "$is_sv" "$expected_components" "$internal")
+    backup_run_id=$(latest_full_backup_run_id_gcloud "$namespace" "$migration_id" "$is_sv" "$expected_components")
     echo "$backup_run_id"
   elif [ -z "$type" ]; then
     _error "No postgres instance $full_instance found in stack ${stack}. Is the cluster deployed with split DB instances?"
diff --git a/cluster/scripts/node-backup.sh b/cluster/scripts/node-backup.sh
index b75a58baae..c24c87b65e 100755
--- a/cluster/scripts/node-backup.sh
+++ b/cluster/scripts/node-backup.sh
@@ -208,17 +208,16 @@ function backup_component() {
   local component=$2
   local requested_component=$3
   local migration_id=$4
-  local internal=$5
 
   local stack
-  stack=$(get_stack_for_namespace_component "$namespace" "$component" "$internal")
+  stack=$(get_stack_for_namespace_component "$namespace" "$component")
 
   if [ "$component" == "$requested_component" ] || [ -z "$requested_component" ]; then
     if [ "$component" == "cometbft-$migration_id" ]; then
       backup_pvc "cometBFT" "$namespace" "global-domain-$migration_id-cometbft-cometbft-data" "$migration_id"
     else
       local db_name
-      db_name=$(create_component_instance "$component" "$migration_id" "$namespace" "$internal")
+      db_name=$(create_component_instance "$component" "$migration_id" "$namespace")
       SPLICE_SV=$namespace SPLICE_MIGRATION_ID=$migration_id backup_postgres "$component" "$namespace" "$db_name-pg" "$migration_id" "$stack"
     fi
   else
@@ -231,16 +230,15 @@ function wait_for_backup() {
   local component=$2
   local requested_component=$3
   local migration_id=$4
-  local internal=$5
 
   local stack
-  stack=$(get_stack_for_namespace_component "$namespace" "$component" "$internal")
+  stack=$(get_stack_for_namespace_component "$namespace" "$component")
 
   if [ "$component" == "$requested_component" ] || [ -z "$requested_component" ]; then
     if [ "$component" == "cometbft-$migration_id" ]; then
       wait_for_pvc_backup "cometBFT" "$namespace" "global-domain-$migration_id-cometbft-cometbft-data"
     else
-      instance=$(create_component_instance "$component" "$migration_id" "$namespace" "$internal")
+      instance=$(create_component_instance "$component" "$migration_id" "$namespace")
       wait_for_postgres_backup "$component" "$namespace" "$instance-pg" "$migration_id" "$stack"
     fi
   else
@@ -249,45 +247,44 @@ function wait_for_backup() {
 }
 
 function usage() {
-  echo "Usage: $0 <sv|validator> <namespace> <migration id> <internal (true|false)> [<component_name>]"
+  echo "Usage: $0 <sv|validator> <namespace> <migration id> [<component_name>]"
 }
 
 function main() {
-  if [ "$#" -lt 4 ]; then
+  if [ "$#" -lt 3 ]; then
       usage
       exit 1
   fi
 
   local namespace=$2
   local migration_id=$3
-  local internal=$4 # "true" for internal stack, "false" for external stack
-  local requested_component="${5:-}"
+  local requested_component="${4:-}"
 
   # TODO(#9361): support multiple domains / non-default-ID'd ones
   if [ "$1" == "validator" ]; then
     _info "Backing up validator $namespace"
-    backup_component "$namespace" "validator" "$requested_component" "$migration_id" "$internal"
-    wait_for_backup "$namespace" "validator" "$requested_component" "$migration_id" "$internal"
+    backup_component "$namespace" "validator" "$requested_component" "$migration_id"
+    wait_for_backup "$namespace" "validator" "$requested_component" "$migration_id"
     # CN apps must be strictly before participant, so we sync on apps before starting the participant backup
-    backup_component "$namespace" "participant" "$requested_component" "$migration_id" "$internal"
-    wait_for_backup "$namespace" "participant" "$requested_component" "$migration_id" "$internal"
+    backup_component "$namespace" "participant" "$requested_component" "$migration_id"
+    wait_for_backup "$namespace" "participant" "$requested_component" "$migration_id"
   elif [ "$1" == "sv" ]; then
     _info "Backing up SV node $namespace"
 
-    backup_component "$namespace" "cn-apps" "$requested_component" "$migration_id" "$internal"
-    backup_component "$namespace" "mediator" "$requested_component" "$migration_id" "$internal"
-    backup_component "$namespace" "sequencer" "$requested_component" "$migration_id" "$internal"
-    backup_component "$namespace" "cometbft-$migration_id" "$requested_component" "$migration_id" "$internal"
+    backup_component "$namespace" "cn-apps" "$requested_component" "$migration_id"
+    backup_component "$namespace" "mediator" "$requested_component" "$migration_id"
+    backup_component "$namespace" "sequencer" "$requested_component" "$migration_id"
+    backup_component "$namespace" "cometbft-$migration_id" "$requested_component" "$migration_id"
 
-    wait_for_backup "$namespace" "cn-apps" "$requested_component" "$migration_id" "$internal"
+    wait_for_backup "$namespace" "cn-apps" "$requested_component" "$migration_id"
 
     # CN apps must be strictly before participant, so we sync on apps before starting the participant backup
-    backup_component "$namespace" "participant" "$requested_component" "$migration_id" "$internal"
+    backup_component "$namespace" "participant" "$requested_component" "$migration_id"
 
-    wait_for_backup "$namespace" "participant" "$requested_component" "$migration_id" "$internal"
-    wait_for_backup "$namespace" "mediator" "$requested_component" "$migration_id" "$internal"
-    wait_for_backup "$namespace" "sequencer" "$requested_component" "$migration_id" "$internal"
-    wait_for_backup "$namespace" "cometbft-$migration_id" "$requested_component" "$migration_id" "$internal"
+    wait_for_backup "$namespace" "participant" "$requested_component" "$migration_id"
+    wait_for_backup "$namespace" "mediator" "$requested_component" "$migration_id"
+    wait_for_backup "$namespace" "sequencer" "$requested_component" "$migration_id"
+    wait_for_backup "$namespace" "cometbft-$migration_id" "$requested_component" "$migration_id"
   else
     usage
     exit 1