### Steps to reproduce this issue

```
dubbo.registry.simplified=true 
<dubbo:service interface="org.apache.dubbo.demo.DemoService" register="false" ref="demoService" delay="5000"/>
```

when set dubbo.registry.simplified true. the dubbo.service.register won't take effect because of the `register`  key was simplified and will use default value `true`;

```
URL providerUrl = getProviderUrl(originInvoker);
...
final URL registeredProviderUrl = getRegisteredProviderUrl(providerUrl, registryUrl);
boolean register = registeredProviderUrl.getParameter("register", true);
```
may use `providerUrl` here



});
    }
    public <T> void reExport(final Invoker<T> originInvoker, URL newInvokerUrl) {
        
        ExporterChangeableWrapper exporter = doChangeLocalExport(originInvoker, newInvokerUrl);
        
        URL registryUrl = getRegistryUrl(originInvoker);
        final URL registeredProviderUrl = getRegisteredProviderUrl(newInvokerUrl, registryUrl);
        
        ProviderInvokerWrapper<T> providerInvokerWrapper = ProviderConsumerRegTable.getProviderWrapper(registeredProviderUrl, originInvoker);
        ProviderInvokerWrapper<T> newProviderInvokerWrapper = ProviderConsumerRegTable.registerProvider(originInvoker, registryUrl, registeredProviderUrl);
        /**
         * Only if the new url going to Registry is different with the previous one should we do unregister and register.
         */
        if (providerInvokerWrapper.isReg() && !registeredProviderUrl.equals(providerInvokerWrapper.getProviderUrl())) {
            unregister(registryUrl, providerInvokerWrapper.getProviderUrl());
            register(registryUrl, registeredProviderUrl);
            newProviderInvokerWrapper.setReg(true);
        }
        exporter.setRegisterUrl(registeredProviderUrl);
    }
    /**
     * Reexport the invoker of the modified url
     *
     * @param originInvoker
     * @param newInvokerUrl
     */
    @SuppressWarnings("unchecked")
    private <T> ExporterChangeableWrapper doChangeLocalExport(final Invoker<T> originInvoker, URL newInvokerUrl) {
        String key = getCacheKey(originInvoker);