Currently, if you select multiple rows in the Archive Editor and then right-click on a cell that is not the ► cell or the Value cell beside it, your selection will collapse to the row whose cell you right-clicked.
That is, no matter how many rows you select, only 2 cells out of that selection will preserve your selection after you right-click on them.
This is frustrating when you select multiple bad events to delete and then right-click within your selection but not on 1 of those 2 special cells, and you must select your rows all over again.