That’s not how template switches work. The state is only based on the template. So when one switch turns on, the other switches state will naturally show off because the template executes again. Keep in mind, when the template updates, it will not run the turn on or turn off actions. Those are only called when you interact with the switch in the ui or use a service.
If you follow this post, it will auto create all the switches for harmony and they will behave the exact same way as the removed switches.