如何通过visual studio安装项目降级程序？

我在C＃上有程序。我为这个项目创建了VS Setup。首先，我为版本1.0.0创建设置，然后我为1.0.1创建。

我 n设置属性我检查  DetectNewerInstalledVersion  到
false，  RemovePreviousVersion to
true。

安装1.0.0之后我尝试通过运行setup v.1.0.1升级到1.0.1。它完成了成功。但是当我尝试降级到1.0.0时它会安装我到  regedit   2
位置（我的意思是1.0.0和1.0.1），在应用程序文件夹中留下1.0.1，而不是1.0.0。如何将程序从1.0.1降级到1.0.0一步 - 安装1.0.0？

I have program on C#. I create VS Setup for this project. First of all i create setup for version 1.0.0, then i create for 1.0.1.
In Setup Properties I check DetectNewerInstalledVersion to false, and RemovePreviousVersionto true.
After install 1.0.0 I try to Upgrade to 1.0.1 by run setup v. 1.0.1. It`s finish success. But when I try to downgrade to 1.0.0 it`s install me to regedit 2 positions (I mean 1.0.0 and 1.0.1), and in application folder left 1.0.1, not 1.0.0. How to downgrade program from 1.0.1 to 1.0.0 in one step - install 1.0.0?