Begin of the insertion#End of the insertion **Acceptance criteria**

* The Begin of the insertion`Primer::OpenProject::FilterableTreeView`End of the insertion Begin of the deletion Primer::OpenProject::FilterableTreeViewEnd of the deletion should be extended for this to support async loading and filtering

* When filtering:

* all search results are shown, with their Begin of the insertioncomplete (parent)End of the insertion hierarchy being expanded

* When removing the filter:

* The previous collapsed/expand state is Begin of the insertionrestoredEnd of the insertion Begin of the deletion rememberedEnd of the deletion

* The previous selection is Begin of the insertionrestoredEnd of the insertion Begin of the deletion rememberedEnd of the deletion (multi selection mode)

* Begin of the insertionMutliEnd of the insertion Begin of the deletion mutliEnd of the deletion selection mode:

* With include sub-items checked: when selecting a parent node, it activates **all children** not only the currently visible ones.

* The search bar is moved to the first position, then the segmented control, then the checkbox


**Project selector**

* The global project selector can expand/collapse hierarchy nodes

* Per defaullt, all nodes are collapsed


Begin of the insertion#End of the insertion **Technical notes**

* The limit for the project selector remains


Begin of the insertion#End of the insertion **Out of scope**

* Remembering what was collapsed and what was expanded after page reload