Emerson Exchange 365

I powered-up my OPC server and the mirror started automatically.

But when I open the diagnostics, the pipes were deactivated.

I activated the pipes and waited for few minutes but the mapped items are still unable to pass through the mirror as it showed  ----> "Unknown item" for all.

So, I closed the diagnostics and restarted the mirror then re-opens the diagnostics and activated the pipes.

With this procedure, the mapped items worked fine.

Is this the only way to make it work or did I missed some configuration?

Is there a way to make everything work automatically like, pipe/s will automatically activate, no "unknown items" in mapped items, after switching ON the server?

Thanks for your answer/s.