I did a new install of the latest TANE release on my D: drive in folder Trainz-TANE. When install was complete, I opened CM as Admin and downloaded one of my assets that needs to be updated. I then opened the asset in CM using "Edit in Explorer". The asset opens nicely in D:\Trainz-TANE\editing. I then opened that folder and edited the config using ConText. I saved and closed the config file and Context, then clicking on the up arrow I am back at the asset folder in Explorer. I then click and drag it into the CM window, where the icon immediately changes to the circle with a slash.
However, now when I use CM to "Import Content Folder" it goes directly to the D:\Trainz-TANE\editing, saving me a few keystrokes, but it would sure be nice to be able to click,drag and drop.
I am using Windows 8.1. I have looked at some of the controls, but can not find anywhere that makes changes to how or to what the Admin can access things.