ArcGIS Pro 2.0.1 trial.
Using the add data button, I browse to a folder containing 40 or so polygon shapefiles (all sorted A-Z):

I select them all and click OK to add the files to my current project. However, the new layers are listed in reverse alphabetical order!

It's really tedious to manually drag each layer into the correct order...
Where is the option to Sort layers (within a group layer in this case) A-Z?
Thanks,
Theo