Hello to all :-)

I have a strange problem with Xara Designer (Pro X11).

I created 2 vector illustrations in Xara (in a A3 format). Then, I want to export both of them in svg (my aim is to do a bitmap finish in another program - Affinity)
When exporting my images, I manage to export the first one at any resolution I want (75, 96, 150, 300 dpi). Of course I prefer to choose the highest resolution of 300 dpi, to get the best result to print the illustrations.
But for the second illustration, the resolution stays at 75 dpi, whatever I choose when exporting. That's very very strange.

The 2 illustrations are very closed. I don't see any significant difference between the two. What could be the blocage here ?

Thank you for your help !