Problem with xhtml, using the appendTo="@(body)" property and saving, does not update my object data in the bean

Question

                              header="Atualizar Contatos" dynamic="true" modal="true" closable="false" appendTo="@(body)">
                        <p:panel id="pnlAtualizarTelefones" class="panel-simples">
                            <c:linha>
                                <c:coluna valueLabel="#{msgCES['Usuario.Tel_Residencia']}: " percentWidth="90" maxWidth="300">
                                    <c:linha>
                                        <c:coluna percentWidth="20">
                                            <p:inputMask value="#{pesquisaUsuarioBean.usuarioContato.nrDdd}" maxlength="2" styleClass="Wid100 coluna-numerica"
                                                    title="#{msgCES['Usuario.DDD_Residencial']}" tabindex="4005" mask="9?9" slotChar="" placeholder="#{msg['Pessoa.DDD']}"/>
                                        </c:coluna>
                                        <c:coluna percentWidth="60">
                                            <p:inputMask value="#{pesquisaUsuarioBean.usuarioContato.nrTelefone}" maxlength="10" styleClass="Wid100"
                                                    title="#{msgCES['Usuario.Telefone_Residencial']}" tabindex="4006" mask="9?99999999" slotChar="" placeholder="#{msg['Pessoa.Telefone']}"/>
                                        </c:coluna>
                                    </c:linha>
                                </c:coluna>
                            </c:linha>
</p:panel>
                        <f:facet name="footer">
                            <div align="right">
                                <p:commandButton value="#{msg['gen.confirmar']}" icon="fa fa-check white" global="false"
                                    action="#{pesquisaUsuarioBean.atualizarTelefones}" 
                                    process="@this :#{component.namingContainer.clientId}:pnlAtualizarTelefones" 
                                    update="@(.styleUpdateInfoUsuario) :messages"/>
                                <p:commandButton value="#{msg['gen.cancelar']}" icon="fa fa-close white" global="false"
                                    action="#{pesquisaUsuarioBean.fecharDialogAtualizarTelefones}" 
                                    process="@this" />
                            </div>
                        </f:facet>
                    </p:dialog>

When placing the appendTo="@(body)"property, my "searchUsuarioBean.usuarioContact" object is not updated in the Bean... I click confirm, calls the action searchUsuarioBean.upTelephones, but the object does not come with the changed values on screen. The problem is that I need to use something similar to appendTo="@(body)", because of the problems with mobile/tablet access.