diff -pruN 0.13.2-2/debian/changelog 0.13.2-2ubuntu1/debian/changelog
--- 0.13.2-2/debian/changelog	2025-09-04 13:18:39.000000000 +0000
+++ 0.13.2-2ubuntu1/debian/changelog	2025-09-08 08:46:46.000000000 +0000
@@ -1,3 +1,9 @@
+xdg-terminal-exec (0.13.2-2ubuntu1) questing; urgency=medium
+
+  * Add migration script from x-terminal-emulator (LP: #2107326, #2121943)
+
+ -- Alessandro Astone <alessandro.astone@canonical.com>  Mon, 08 Sep 2025 10:46:46 +0200
+
 xdg-terminal-exec (0.13.2-2) unstable; urgency=medium
 
   * Set default GNOME terminal to Ptyxis
diff -pruN 0.13.2-2/debian/control 0.13.2-2ubuntu1/debian/control
--- 0.13.2-2/debian/control	2025-09-04 13:18:39.000000000 +0000
+++ 0.13.2-2ubuntu1/debian/control	2025-09-08 08:46:46.000000000 +0000
@@ -1,9 +1,11 @@
 Source: xdg-terminal-exec
 Section: x11
 Priority: optional
-Maintainer: Debian freedesktop.org maintainers <pkg-freedesktop-maintainers@lists.alioth.debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Debian freedesktop.org maintainers <pkg-freedesktop-maintainers@lists.alioth.debian.org>
 Uploaders: Jeremy Bícha <jbicha@ubuntu.com>
-Build-Depends: debhelper-compat (= 13), bats <!nocheck>, scdoc <!nodoc>
+Build-Depends: debhelper-compat (= 13), bats <!nocheck>, scdoc <!nodoc>,
+               dh-sequence-migrations,
 Standards-Version: 4.7.2
 Vcs-Browser: https://salsa.debian.org/freedesktop-team/xdg-terminal-exec
 Vcs-Git: https://salsa.debian.org/freedesktop-team/xdg-terminal-exec.git
diff -pruN 0.13.2-2/debian/migrations 0.13.2-2ubuntu1/debian/migrations
--- 0.13.2-2/debian/migrations	1970-01-01 00:00:00.000000000 +0000
+++ 0.13.2-2ubuntu1/debian/migrations	2025-09-08 08:46:46.000000000 +0000
@@ -0,0 +1 @@
+debian/x-terminal-emulator-to-xdg-terminal-exec.sh
diff -pruN 0.13.2-2/debian/x-terminal-emulator-to-xdg-terminal-exec.sh 0.13.2-2ubuntu1/debian/x-terminal-emulator-to-xdg-terminal-exec.sh
--- 0.13.2-2/debian/x-terminal-emulator-to-xdg-terminal-exec.sh	1970-01-01 00:00:00.000000000 +0000
+++ 0.13.2-2ubuntu1/debian/x-terminal-emulator-to-xdg-terminal-exec.sh	2025-09-08 08:46:46.000000000 +0000
@@ -0,0 +1,77 @@
+#!/bin/sh
+
+###
+# This script applies the default x-terminal-emulator configuration,
+# which is system-wide, to xdg-terminal-exec which is per-user and
+# uses .desktop files instead.
+#
+# We will avoid overwriting an existing xdg-terminal-exec configuration.
+###
+
+set -uf
+
+XDG_CONFIG_HOME="${XDG_CONFIG_HOME:-$HOME/.config}"
+XDG_DATA_HOME="${XDG_DATA_HOME:-$HOME/.local/share}"
+XDG_DATA_DIRS="${XDG_DATA_DIRS:-/usr/local/share:/usr/share}"
+LOWERCASE_XDG_CURRENT_DESKTOP=$(printf '%s' "${XDG_CURRENT_DESKTOP-}" | tr '[:upper:]' '[:lower:]')
+IFS=":"
+
+for desktop in ${LOWERCASE_XDG_CURRENT_DESKTOP}; do
+    CONFIGS=${CONFIGS:+${CONFIGS}${IFS}}${XDG_CONFIG_HOME%/}/${desktop}-xdg-terminals.list
+done
+CONFIGS=${CONFIGS:+${CONFIGS}${IFS}}${XDG_CONFIG_HOME%/}/xdg-terminals.list
+
+# gnome-terminal used to set itself as the user-default terminal on app launch
+# even if a system-wide default already existed. Undo this configuration.
+for config in ${CONFIGS}; do
+    if [ -f "$config" ]; then
+        current=$(sed -n '/^\s*#/!{p;q}' "$config")
+        if [ "$current" = "org.gnome.Terminal.desktop" ]; then
+            rm "$config"
+        fi
+    fi
+done
+
+# If there is an existing valid configuration, bail out.
+for config in ${CONFIGS}; do
+    if [ -f "$config" ]; then
+        exit 0
+    fi
+done
+
+# If the user never changed the x-terminal-emulator configuration, bail out.
+if ! update-alternatives --query x-terminal-emulator | grep -q "^Status: manual"; then
+    exit 0
+fi
+
+TERMINAL_EXEC="$(realpath "$(which x-terminal-emulator)")"
+if [ ! -x "$TERMINAL_EXEC" ]; then
+    exit 0
+fi
+
+# Find a matching desktop file entry
+for dir in ${XDG_DATA_HOME}${IFS}${XDG_DATA_DIRS}; do
+    APPLICATIONS_DIRS=${dir%/}/applications/${APPLICATIONS_DIRS:+${IFS}${APPLICATIONS_DIRS}}
+done
+
+# shellcheck disable=SC2086 # intentional word splitting
+TERMINAL_DESKTOP="$(find $APPLICATIONS_DIRS -type f -name '*.desktop' -exec sh -c \
+    'sed -n "/\[Desktop Entry\]/,/\[.*\]/p" "$1" | grep -q -E "^Exec=$2|^Exec=$(basename "$2")" && echo "$1"' sh {} "$TERMINAL_EXEC" \; \
+    2>/dev/null | head -n1)"
+if [ ! -f "$TERMINAL_DESKTOP" ]; then
+    exit 0
+fi
+
+TERMINAL_DESKTOP=$(basename "$TERMINAL_DESKTOP")
+# The default terminal might be more expressive than just a desktkop file id,
+# because it supports specifying a desktop action name.
+# If the current default matches or is a specific action of the same terminal, bail out.
+case "$(xdg-terminal-exec --print-id)" in
+    "${TERMINAL_DESKTOP}") exit 0;;
+    "${TERMINAL_DESKTOP}:"*) exit 0;;
+esac
+
+# shellcheck disable=SC2086 # intentional word splitting
+set -- $LOWERCASE_XDG_CURRENT_DESKTOP
+TERMINALS_LIST_FILE="${XDG_CONFIG_HOME%/}/${1-}${1:+-}xdg-terminals.list"
+echo "$TERMINAL_DESKTOP" > "${TERMINALS_LIST_FILE}"