CC Stock Library won't save as PNG when licensing. It converts to flat JPEG after purchase.

I have a bunch of Transparent PNG images and when I license them, they update as FLAT JPEGs in my PS Panel and in my document and I can't figure out how to keep them as PNGs. But I can go and download them and I get the choice of JPEG or PNG and they download correctly.  But then I have to drag them all in a update individually. 
I'm not seeing a preference that I can change to make them 'hold' as PNGs. The preview icon shows them as transparent, but says JPEG in the info next to it. 
Thanks for the help.