The move comes after 3 weeks of previews at Broadway's Vivian Beaumont Theater, where "Saturday Night Live" ensemble member Kattan had been playing the role of Xanthias. A release from the show's press representative simply stated that Kattan had withdrawn from the production, and did not cite a reason for the departure.
Bart has been rehearsing the role of Nathan Lane's sidekick, and will give his first performance by mid-week, according to the statement; in the meantime, understudy Timothy Gulan will perform the part beginning Monday, July 12.
At this time, the show is still scheduled to open July 22.
The recasting marks the reunion of Roger Bart with his Producers co-star Lane, as well as his Producers director and choreographer, Susan Stroman. Bart was Tony-nominated for the role of Carmen Ghia in the Mel Brooks musical, after having previously won the award for You're a Good Man, Charlie Brown.