How Prevent Engine Failovers if RMC disconnected

How to prevent Engine Failover on case RMC channels get disconnected.

Doing some Network work which may cause RMC disconnection. What best way to limit failover to avoid disruptions which could cause nuisance alarms?

Is it best to force failover all engines to their Primary Platforms or will Engines just remain active on current platform during RMC disconnections?