Due to scheduling conflicts with Shannen Doherty , he was subsequently written out of the episode .
Following his appearance in the stage adaptation of When Harry Met Sally , Perry was asked to reprise his role as Dylan McKay in a guest appearance on 90210 .
Due to scheduling conflicts with Shannen Doherty , Perry was subsequently written out of the episode .
Following his appearance in the stage adaptation of When Harry Met Sally , Perry was asked to reprise his role as Dylan McKay in a guest appearance on 90210 .