Solution
User needs to configure both Measurement Length and maxMeasurementLength(Symbol) parameters. If user wants to view the full symbols in the measurement, the Measurement Length should match with the waveform burst length, which was created in the RFmx WLAN Waveform creator.
We can find these details in the RFmx WLAN help document, which explains the functionality of these parameters.
RFIC: Measurement Length --> RFmx WLAN: OFDMModacc: Acquisition Length(s)
RFIC: MaxMeasurement Length (symbol) -- > RFmxWLAN: OFDMModacc: maxMeasurementLength(symbol)