The 
(Root Filter) is part of the Project To Do List. It is located on the top right corner and allows you to filter out selected root
items scoped to the current Buffer, open on a Project. This feature narrows down the items displayed in the Buffer,
which makes it easier to pick and choose the Items you want to copy to the target
(either another Project or the As-Built). Select single or multiple Items. After you
select the icon, the software retrieves the Items you selected. A filtered Buffer
is identified with a blue colored icon 
. In addition, the Tree View pane will adjust accordingly to match the filtered Buffer.
The Root Filter displays the following information:
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Root Item Name
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Item Type
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Scoped date/time
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Remove from Scope
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All the Search, Sort, Group By functions are available and will execute on the filtered root Items.
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In cases where the same item is in the Buffer with two different availability statuses (depending on how it got claimed), the filtered Buffer displays the item only once, with a status of Active.
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When closing and reopening the filtered Buffer, the filter settings are not retained. It is recommended to commit (either via a Copy or a Merge) the filtered data to the target before you close the filtered Buffer.