Filming for the “Gilmore Girls” Netflix revival is in full swing. Melissa McCarthy, who played Sookie St. James on the beloved series until its ending in 2007, announced her return on April 7 after months of uncertainty. While fans of the series are relieved to have her on board, there are several other key characters that won’t be featured.

In an interview with Entertainment Weekly, creator Amy Sherman-Palladino revealed that her and her husband had a few regrets about cast members they weren’t able to bring back to the series. She shared with the publication that getting staple “Gilmore Girls” stars like Lauren Graham, Alexis Bledel and Scott Patterson on board was easy, but when it came to getting stars like Max Medina (Scott Cohen), who played Rory’s Chilton English teacher who later dated her mother, to come back they ran into a few issues.

“One person I didn’t figure out how to get in was Scott Cohen, whom we love so much. Not that we’re still not thinking about him, but we couldn’t figure out how to get Max in there,” Sherman-Palladino explained. “We had so much story. We left storylines on the cutting room floor before we started."

Cohen is hardly the only “Gilmore Girls” original who hasn’t signed on for the reboot. On Feb. 2, McCarthy — who was uncertain about her return at the time — replied to a curious fan about appearing in the show. She stated at the time that she had not been invited to star in the “Gilmore Girls” reboot. Kathleen Wilhoite, who played Luke’s sister Liz Danes, replied to the “Boss” star’s tweet claiming that she hadn’t been asked back either. She did not reveal the reason for her exclusion, but noted that they were “entirely diffrnt [sic]” from McCarthy’s.

Similarly Sebastian Bach, who played Gil — Hep Alien’s guitarist and real-life Skid Row rocker — was not asked to reprise his role. He tweeted, however, that it “would be neat” if he had. Chad Michael Murray, who played Tristan Dugray on the show, has not spoken out about the possibility of coming back, but is not believed to have been included in the Netflix reboot either, according to Variety. The same can be said for former “Gilmore Girls” stars Arielle Kebbel, who played Lindsay, and Emily Bergl, known to fans as Francie. Neither have spoken about the reboot publicly.

“Gilmore Girls” will consist of four 90-minute long episodes. The show has not yet received an official release date.