You no longer have to activate the KPI Signals (com.snc.pa.kpi_signals) plugin. It is active by default.
If you do not want this feature, request a Now Platform administrator to set the property com.snc.pa.activate_kpi_signals to false. Because this property does not exist by default, the administrator must add it.
If you reactivate KPI Signals, signal detection resumes from the time you originally deactivated the feature, not from the time you reactivated it.