Hi NicoClock,
Thanks for sharing the operation parameters.
The machine origin for your project is set to the bottom of the canvas, which means that Z0.0 is the bottom of the canvas volume and Z6.0 is the top surface of the canvas volume. Any cutpaths generated will be inside of the canvas volume, i.e. their Z coordinates will be from Z0.0 to Z6.0.
The G0 Z6.1 is a move to the rapiding height above the canvas, because you have Rapid Height set to 0.1mm in your operation parameters. Then the subsequent XY move is to the start of the first cutpath before it feeds down to 0.6mm below the top of the canvas, per your operation's Cut Depth, which is going to be Z5.4.
It looks like you just need to move your machine Z origin to the top of the canvas, which you can do under Canvas Properties by clicking the up-arrow next to the 'Z Origin' parameter, which should set it to 6.0mm. Then click Apply and you should be able to export your G-code so that cutpath coordinates have Z0.0 as the top-surface of your workpiece, and the first layer of cuts will be at Z-0.6.
- Charlie