I like to have a z lift when printing, but i have noticed that it will only raise z IF extruder retraction is also set to something.
So if retraction is 0 and z-lift is set to 0.20 the nothing will happen.
If retraction is 0.1 and z to 0.20 THEN it will lift.
The next thing is: i have set up startscript so it will extrude 10mm filament at beginning.
But it randomly run extruder backwards 10mm instead.
G1 E10 F300 ; purge nozzle