renumbering illustrator artboards

i would thing there would be a really easy way to do this, but after searching this is the best i could find:

Use the Rectangle tool to draw rectangle that cover the artboard size of all of your artboard except the one that you want to be the first. Using smart guide it will snap to the artboard. It’s IMPORTANT to draw them in the order you want your artboard to be re-order.
Now using the Artboard tool, delete all artboard except the one you did not draw a rectangle over.
Select all the rectangles from step 1. and choose Object > Convert to Artboards