Start:
;G28
G1 Z40 F600 ; Move bed lower the purge box
T[initial_no_support_extruder]
START_PRINT EXTRUDER_TEMP=[nozzle_temperature_initial_layer] BED_TEMP=[bed_temperature_initial_layer_single]
M204 S2000
M104 S[nozzle_temperature_initial_layer]
G1 Z3 F600
M83
G92 E0
G1 Z1 F600

Change Filament:
G2 Z{z_after_toolchange + 0.4} I0.86 J0.86 P1 F10000 ; spiral lift a little from second lift
G1 X42 Y180 F30000
G1 Z{z_after_toolchange} F600