I just checked through the list of options for the "Call another action set" action, and I notice those two action sets do not appear there.
The options for "Copy action set" do not include those two either.
I've noticed that when you change the active record ID on a screen (by, say, selecting a different Invoice in the Invoice screen), it doesn't rerun through the OnScreenLoad action set. Since I've loaded up my OnScreenLoad with stuff I want to happen every time an invoice is opened up, I'd like to call that action set whenever a new invoice is selected.