Despite erratic shipping schedules, both Afterlife with Archie and Chilling Adventures of Sabrina are still actively being worked on, Archie Comics Chief Creative Officer Roberto Aguirre-Sacasa, writer of both series, has assured CBR.

Aguirre-Sacasa has been more visible than ever lately, as executive producer and showrunner of The CW’s Archie-based hit series Riverdale. But comic book shelves haven’t seen as much of him lately. It’s been since Aug. 2016 that a new issue of Afterlife with Archie went on sale, and the most recent issue of Chilling Adventures of Sabrina was released this past August, with no release date scheduled for the next issue of either title.

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Yet even though Aguirre-Sacasa has been busy with Riverdale and the Netflix-bound television version of Chilling Adventures of Sabrina, both comic book series remain in production. Aguirre-Sacasa told CBR, in an interview focused on tonight’s midseason finale of Riverdale, that Afterlife artist Francesco Francavilla and Sabrina artist Robert Hack are currently at work drawing the respective horror series.

“Both Robert and Francesco are drawing,” Aguirre-Sacasa told CBR. “It’s been a crazy balancing act to do the shows and the comic books. But they are not dead, those books. They are slowly chugging along.”

Afterlife with Archie debuted in 2013 to widespread acclaim. The series depicts a zombie invasion in Riverdale and the effect it has on the Archie gang, with considerably more graphic content than traditional Archie Comics releases. Its success inspired the Archie Horror imprint and the 1960s-set Chilling Adventures of Sabrina, which debuted in 2014. Ten issues of Afterlife have been released, and eight issues of Chilling Adventures of Sabrina.

When reached by CBR, Archie Comics stated there was no new update on the shipping schedule of either title.

Both comics have sparked a current wave of horror titles at Archie Comics, including the current Jughead: The Hunger (featuring Jughead as a werewolf) and the upcoming Vampironica (starring a vampire Veronica).

Check back with CBR for our full interview with Aguirre-Sacasa on the midseason finale of Riverdale.