Cohan departed the show during the tenth season in order to star in ABC's Whiskey Cavalier, which was cancelled before the end of the first season.
They filed a lawsuit against network AMC in 2017 for breach of contract, tortious interference and unfair or fraudulent business acts under California business code.
In a statement this week, AMC reassured fans that it would continue its plan to turn into The Walking Dead network by any means necessary.
This week sees the release of The Walking Dead #193 and word on the street is that the issue features the series most shocking death ever.
Several stars of the TV show have announced they won't be attending these conventions any longer.