TreeBranch Maintain Full Tree of PathList / force Null items?

Hi, 

I used Tree8 and TreeFrog to create two different Trees.

Now I want to use Jissis new TreeBranch to maintain the TreeStructure of the PathList(P).

In the DataSet(T) are not all the Branches existing though, which would cause an error.

So my Idea was to create the missing branches to avoid the error, but this seems to be a very odd strategy.

Is there a way to create <null> items in order to clean again afterwards?

Or else, is there a better way to recieve branches from an incomplete Tree with maintaining structure of the PathList?

Thanks!