exported png has more white space than image
I am using a flyer template Adobe Stock image. It is one layer with many nested sublayers. Some of the sublayers produce an image outside of the main flyer image, to showcase it for sale. I can hide those sublayers. I can't delete the sublayers. Some of the layers extend outside of the main image and are visible if I accidentally move that sublayer. My problem is the extra space I get when I export as a png. I've tried making the artboard the size of the art, but the hidden outside image interferes. I don't know any other way to change the size of the artboard or even if that is the problem. I've tried releasing the sublayers in an attempt to delete the ones I don't want, but I can't drag them above the layer they are in to turn them into layers. I have and have not selected all active layers, but since there is just one layer, I don't think that makes a difference. I am new to Illustrator, but I have used purchased vector images before, and I have created simple ones of my own. I would appreciate any and all suggestions, as I've exhausted all the information I could find online. I'm using Illustrator CC 2017.1.0.
