Example:

News Articles 2012
|---> August 2012
|----> Item ABC

After applying custom Filter I'm printing and/or exporting
filtered results to new myinfo file.

Unfortunately, filtered items never include any tree
hierarchy info, i.e. parent (News Articles, August 2012)
items.

Here's my idea ...

Here's another more helpful example:
Again, open Myinfo Quick start.
Select TREE pane, expand "Tasks" and select "Bike the lakefront".
In the toolbar, set TREE ITEM TEXT (not background) color to GREEN.

Now compare with print preview:
"Welcome" should not be green
"Tasks" should not be green
"Call ...

Exact steps to reproduce
1. open help->example topics->"myinfo quickstart" document
2. select filter pane
3. select "all tasks (grouped)" filter
4. select file->print, print what: filter pane(wysiwyg)
5. preview

now compare this with actual filter pane
its messed up!