You snap to existing zones if you have matching resolution ratios. The resolution can different but one must be multiple of another. To give an example: you can snap a zone of 512 tiles to one of 256 (ratio 1:2) or of 64, 1024 etc. But you cannot snap it to one of 500 for example. When ratio is not matching the LOD cannot function.
You can also have zones of non multiple of two resolution and snapping to each other (200 to 100, to 10 etc). You can see if a zone is snapped to another or not by the green border when the zones are selected (otherwise the border is red). Showing or not the snapping status it is a check to be made in the preferences dialog.
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum