I have an answer. Very newbie question, I'm a bit embarrassed, but sometimes the easy things are the ones without a reference to look up.
In case anyone else has this issue, if you collaps the topline task, then copy paste, everything underneath it will paste in magically linked and ready to go!
I'm only skimmed this thread, so forgive me if this answer is too simplistic, but this sounds like an issue I've played with recently.
If you save as an Excel file, rather then just copy paste to Excel, you'll get a field "Outline level". In Excel, it's very fast to filter on Outline level to...
I need to build a project schedule which includes enterprise level portions (no issues), and then a repetetive task list for each of 15 locations. Because the 15 locations are identical (for now), I'm trying to find a way to avoid buidling them individually.
I can easily copy and paste tasks...