Assuming you have them in the correct location on the screen, relative to the cut lines, they’ll cut in that same spot. Now this assume you’re sending both the dashed lines and the cut lines to cut at the same time.
If, for some reason, you’re not sending them to cut together, then you’ll need to be in WYSIWYG mode. This would be a situation like for the boxes I make whereby I do not use dashed lines and, instead, use the embosser to score the fold lines. In that situation, I have to change out the embosser for the blade holder after scoring and before cutting, thus, I have to make sure I use the same origin and, again, use WYSIWYG mode.