Moved anchor point: How to fill path with colour automatically?
I vectorized a picture and got this paths:

I think the dark green area is one closed path
because if I choose the direct selction tool
I get this:

And if the red green path is choosed I can change
the colour with one click:

I added an anchor point to the red green path but If I move the anchor point
the new area isn't filled automatically with the dark green colour:

Why isn't it filled?
Isn't it a closed path against my assumption?
If it is a closed path: Why isn't it filled? And how can I do it?
If it is an open path: Why can I then change the color with one click (picture before)?
What's then the best solution to fill the new area with the colour of the rest of the path?
Is there a setting to do
automatically fill areas of open paths with the
filling path colour of the rest if the area is
resized with anchor points?
