Not a helpful response at all, but that's probably because the issue wasn't being experienced. I think what was meant (and why I was stumbling on as 2 decade user) was simple how to add another Creo model to the drawing.
It appears this LDA/Legacy Drawing associator option to Add Model is not the Add Model that most of us would be looking for (don't what it is, it doesn't do anything and the support document certainly doesn't provide any clue what its for. The problem is the search tool only sends you here instead of to the actual hidden legacy menu that you need to Add a (Creo) Model to the drawing. Here is what I do: in the search tool type Set Active and it will bring up a link to the legacy menu which IS where you actually Add a Model. All of the old functions are here (Set Rep, Replace, etc.).
At least that's what I was needing. The LDA might be a great tool, maybe I'll find time to dig-up a tutorial.
