# Change Log --- - [Optimize: remove discovery module useless code](https://github.com/Tencent/spring-cloud-tencent/pull/597) - [Bugfix: InstancePreRegisteredEvent and InstanceRegisteredEvent modify Registration info](https://github.com/Tencent/spring-cloud-tencent/pull/583) - [Fix issue 579:Report the labels in request when report the result of invocation by RestTemplate](https://github.com/Tencent/spring-cloud-tencent/pull/600) - [Optimize: optimize configuration conditional & optimize config data tips"](https://github.com/Tencent/spring-cloud-tencent/pull/605) - [Optimize: Maybe remove Chinese characters](https://github.com/Tencent/spring-cloud-tencent/pull/609) - [Optimize: InstanceId of PolarisRegistration and PolarisServiceRegistry](https://github.com/Tencent/spring-cloud-tencent/pull/612) - [Bugfix: fix feign report call result error when using feign direct call](https://github.com/Tencent/spring-cloud-tencent/pull/623) - [optimize:optimize PolarisRouterContext and constants.](https://github.com/Tencent/spring-cloud-tencent/pull/628) - [support spring-retry router](https://github.com/Tencent/spring-cloud-tencent/pull/631) - [feat:Transfer http headers specified by environment variables](https://github.com/Tencent/spring-cloud-tencent/pull/638)