Chuckt.... we all know that Baptism is only a symbol. We all know that first you give your heart to Christ and then you are to be Baptized to show that you are a new person in Christ.
When a person comes to you and says that they used to be in the church, even went through the Baptism.... they are almost always telling you that they accepted Jesus as their Savior at some point and now they are having issues with faith. Most, I mean the huge super, super majority, of preachers and priests won't perform a Baptism until they are sure the person understands that Salvation is from God and Baptism is only a symbol.