Edits in an AAF in Resolve

Are you talking about the timeline in the Conform tab? I can edit there just fine, although the tracks are locked by default. Make sure you click on the lock icon next to the track label ("V1", etc) to unlock it.

Or am I misunderstanding?

AAF and XML are not the same things, you probably already knew that.

In Apple COLOR, we could not make changes to the XML-round trip timeline without opening the door to errors. The difference with Resolve is that DaVinci has the ability to generate and export a new XML which can be opened in Final Cut, or any other application that can see the XML. COLOR relied on revising the original XML which was created in FCP.

The AAf round trip for Resolve is not intended to be editable. You can do it at your own risk.
I recently finished a series where the revisions and FX imbeds were nearly constant.
I ended up exporting Target-mode complete shows, which, aside from the odd "flop" geometry needing to be corrected, or a missing clip that had been mis-connected in the original, worked out fine.

It would be great if the project migration between all these applications was seamless and continuously and forever editable, but given the reality that most of these software constructs are Russians trying to speak Japanese to Italians, I'm grateful that it works at all, most of the time.

jPo

You mean "Old Ben"? Ben Kenobi?