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- When a modified time series is a simulated forecast timeseries and the valid time is equal to time zero (or later) then the entire modifier will be applied, otherwise the modifier will only be applied up to the valid time. When a modifier is created the valid time will be equal to the system time. In this situation the entire modifier will be applied. When the modifier is applied from still available and used in later runs with a higher time zero then the modifier will only be partly applied up to the valid time to T0.
- When a modified time series is an external forecast time series, and no valid time is configured, the modifier is valid for all external forecast times.
- When a modified time series is an external forecast time series, and a valid time is configured, the modifier is valid for the valid time only.
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