The 35-year-old star played Tristin Dugray in seasons one and two of the original show, but he has since been replaced by Anton Narinskiy for the drama's reboot.
It is not known why Murray decided not to appear in the new Netflix series, but in the four-part show, Tristin will return to his old school and run into Alexis Bledel's character Rory Gilmore, reported Just Jared.
"Gilmore Girls: A Year in the Life", starring Bledel and Lauren Graham, debuted on Netflix on Friday.
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