Ok, I’ve tried what was suggested, and it worked for the rotation, scale & position tracks.
However, it didn’t work for tag animation, like visibility. I’d built an animation in R9, with objects dissolving in using a transition from 0 to 100% visiblity. In R9, I could just select the animtated tags in Object Manager, and they would show in the Timeline. (with ‘link to object manager’)
Man, this is a wee annoying, these little things that were great workflow helpers in R9, that don’t have the same simple functionality in R10.