### Signal

# Stop app if running
killall -9 signal-desktop

# Backup old data from Flatpak-App
~/.var/app/org.signal.Signal/config/Signal
# or from native installed App
~/.config/Signal

# Restore to 
~/.var/app/org.signal.Signal/config/Signal



### Firefox

# Stop app if running
killall -9 firefox-bin

# Backup old data from Flatpak-App
~/.mozilla/firefox/*.default-esr

# Restore to 
~/.mozilla/firefox/*.default-release