Sorry to bother but there's actually another issue. I noticed that when the width of the blue triangle's stroke passed a certain point, it overplayed part of the letter (first picture). This was no big deal as I just used the "Vector Crop Tool" and erased the part of the triangle close to the letter. However, I also wanted to export the logo without the background as a PNG. In oder to do that, I changed the blend mode of the triangle (the one erasing part of the shape) to" erase". As I did that, the triangle seems to disappear (image2). It's still visible as a layer, but its "shape erasing effect" is gone. My goal is to obtain what you see in the 3rd image (without the erasing of part of the A). It seems like there is an incompatibility between the blend mode "erase" ad the "Vector Crop Tool". Any idea ?