Just done this today, worked a treat. Earlier I shifted into drive whilst rolling backwards, cue a clunk and not too smooth engaging drive after that. Reset has cured it.

Is this the calibration that is being done?
(as described in Repair Manual)
Throttle Adaptions
The ECM has a learning adaption which allows the ECM to calculate the precise control required for the electric throttle
damper motor. The adaption process is performed when the ignition is on and the engine is not running. The throttle disc
is moved by the damper motor to the fully closed position and the ECM records the values output by the TP sensor
potentiometers.
If the permanent battery supply to the ECM has been removed, then previous adaptions will have been lost. If adaptions
are stored, then the ECM compares the stored adaption values with the current throttle angle and uses an average of the
stored and current values to create the new adaption value.
If the electric throttle unit has been replaced, the power supply must be removed from the ECM to erase all previously
stored adaption values. FL2 XS SD4 Auto 2010 2012-2017 (21k - 91k miles) (MY2011)
FL2 Metropolis SD4 Auto 2014 2017- (16k - 85k+ miles) (MY2015)
Metro in its 12th Year of (Extended) LR Warranty / Full LR Service History
(Expensive, but Trouble/Worry free - hopefully?)