diff --git a/assets/deploy-drupal.sh b/assets/deploy-drupal.sh
index 08f5cda..d7c1579 100755
--- a/assets/deploy-drupal.sh
+++ b/assets/deploy-drupal.sh
@@ -44,12 +44,27 @@ if [ -s /tmp/deploy-lock-old ] && [ -s /tmp/deploy-lock-new ]; then
       case "$dir" in
         web/modules/*)
           for mod in $ENABLED_MODS; do
-            find "$dir" -name "$mod.info.yml" 2>/dev/null | grep -q . && TO_UNINSTALL_MODS="$TO_UNINSTALL_MODS $mod"
+            if find "$dir" -name "$mod.info.yml" 2>/dev/null | grep -q .; then
+              # Takeover check: if the extension's code also lives outside the
+              # removed package (e.g. taken over as a custom module), keep it
+              # enabled - composer install will just remove the old copy.
+              if find web/modules web/themes -name "$mod.info.yml" -not -path "$dir/*" 2>/dev/null | grep -q .; then
+                echo "SKIP $mod: code exists outside removed package $pkg (takeover), keeping enabled"
+              else
+                TO_UNINSTALL_MODS="$TO_UNINSTALL_MODS $mod"
+              fi
+            fi
           done
           ;;
         web/themes/*)
           for th in $ENABLED_THEMES; do
-            find "$dir" -name "$th.info.yml" 2>/dev/null | grep -q . && TO_UNINSTALL_THEMES="$TO_UNINSTALL_THEMES $th"
+            if find "$dir" -name "$th.info.yml" 2>/dev/null | grep -q .; then
+              if find web/modules web/themes -name "$th.info.yml" -not -path "$dir/*" 2>/dev/null | grep -q .; then
+                echo "SKIP $th: code exists outside removed package $pkg (takeover), keeping enabled"
+              else
+                TO_UNINSTALL_THEMES="$TO_UNINSTALL_THEMES $th"
+              fi
+            fi
           done
           ;;
       esac