Previously with CEP there are isMGT(), importMGT(), getMGTComponent() to work with mogrts. I might have missed something but I’m not seeing anything to work with mogrts using UXP in the documents. How would one import a mogrt, check if a clip is a mogrt, and adjust mogrt properties using UXP?
Not today; adding .mogrt manipulation is definitely on our list. 
Hopefully the wait won’t be too long. Thanks Bruce