I will assume that this is because of the fact that I'm rooted and have TWRP.
It's important for me to be stock (I need the TM WiFi calling) and I want to retain root. Given that, how can I update to Kit Kat?
You'll have to flash back to stock recovery and redo the OTA (or, if you know where the OTA file is on your device, boot into stock recovery and select that file for the update).
You will most likely loose root, but it's easy enough to reflash TWRP and superuser to get root back, I would imagine.
|kitkat 4.4.2, ota, t-mobile|
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