OK - it wasn't clear to me how you were drilling down.
Try using a regular expression (see the KM wiki 5th paragraph down https://wiki.keyboardmaestro.com/action/Select_or_Show_a_Menu_Item) like this:
Notice that
^.*Export to Helicon
will match literally "Export to Helicon" preceded by anything else.
If you know regex, this should be a doddle. If not let me know which item you're trying to find.
Cheers.
BTW - forgot to mention: I typed-in "Plug-in Extras" manually in the action above.