Visible on new search service (but also affect advanced search form panel when reapplying a saved query).

See screenshot.

onSave (i.e. the first time we create the desired configuration of the service) => I want the logical tree: (p1 AND (p2 AND p3 OR p4 AND p5))
Save, then click on 'configure the service' to edit it

onEdit => it shows me a non equivalent tree: (p1) OR (p2 AND p3) OR (p4 AND p5)

Thus, the result are not the same (so logic was broken !) if I save again