Figure is Greyed-Out

Easier to look at the cognac.file  

Why am I not seeing the same on the Structure page in the first place?

Because from the perspective of the root contaner, which you have selected, the figure is replaced by the figure in the child container. Select the child container where the active figure is stored and it will turn magenta.

Move the child container to the right and the figure in root will be replaced only partially (just as a test)

View >> Parameter Hints can be helpful. Some hints are only shown in the clip/phrase editor though

The file looks broken. All parameters are gray

It may seem mysterious, but if you go to the Tracks screen, you will see exactly the repeats that are in grey colour from the real phrase.

With the Hints option parameter enabled, the Yamaha Grand Piano is in the root container.

When you open the Yamaha Grand piano track and the root container figure parameter shows all grey symbols,

There is a piano container, but the figure is in the root container, so what is the function of this container?

Is this strange?, yes 

Remove all containers and the phrases in root are still gray!! Spooky

A new type of phrase has emerged: ghost phrase.

If you drag the phrases to a new arrangement all is fine. HiEnergy, how did you catch theses ghosts?

The file was saved as "Locked" !!! Everything is read only. 

I didn't see a locked file in many years. That must be a feature from 1895 ... and it needs to be removed or made more clear. An easter egg at the wrong time of year ;-)

You should ask HiEnergy to resave it without a lock. Or maybe you can resave it yourself.