export Texture Atlas with scale factor

Hello, I'm using the new feature of exporting Texture Atlas to create animations which later being used in Starling game engine.

We used the high definition (2x) images to create the animation, and we would like to be able to export 1x texture as well for low-end mobiles.

But current version of Animate cc has no way to export Texture Atlas with a scale factor set. Will it get implemented? Surely we don't want to create each animation twice... Thanks so much!