Components migration:change a4j:keepAlive to JSF 2 view scope

Version 1

    Hello everyone: I change richfaces3.3.2GA to 4.2.2Final, 4.2.2 remove the a4j: keepAlive Label, so I changed Bean @Scope("request") to @ViewScoped, but <h: form> content can not be saved. Who can help me? Thank you. Sorry, my English is not very good.