Absolute time / musical time for automation?

So... it's entirely possible to change the tempo of a project without having all the clips go out of alignment. You set all the clips to "absolute time" rather than "musical time", and you can change the base tempo to anything you like, and everything stays where it was.
 
This sometimes comes up for me on mix projects. For example, say I'm working on an all-audio thing, using the timeline basically as a tape machine, and the project tempo basically doesn't matter. I often don't bother to set it in such cases; indeed, I work with a lot of material that's not done to a click, so there'd frequently be no point.
 
To get to my question... occasionally, I'll set to work on something, do a bunch of basic editing, p[erhaps sketch in some initial automation, and only at that point realise that I could do with setting the project tempo. Perhaps this is a project done to a click, and I could make use of some tempo-based functionality in Sonar.
 
So for clips, that's no problem. Set everything to absolute time, change the tempo. However, I've never figured out how to get automation nodes to stick to absolute time, so the automation done up to that point all needs re-aligning by hand.
 
Am I missing something? Is there a way?
 

Aha! Thank you. Couldn't see the wood for the trees there.