if you can restore the language pack, or swype, its problably a .apk install file.
if you can copy that apk from your /system/app, were it problably is when restoring it from titaniumbackup, copy it, save it on your sd. then reboot, and its problably 'gone' from your app drawer, but still in /system/app... then install it like a normal .apk when its placed at /system/app.
then reboot and it should be , as a system app.
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