I looked at the components in CS6 and in Animate, and they seem to be the same. The Flex component is gone, but all of the other ones seem to be there.
I appreciate the response! Window->Common Libraries->Buttons, is gone in Animate. Seems to be replaced by checking Windows->Components. I see button. Customizing it to look and behave the way I want is my problem. Nothing is familiar. Even its instances timeline looks different. The way properties are edited is different. Instances are by default of type Movie Clip, which can be changed to Button, but not permanently without a warning. It's not enough that button be there, but that it can readily be worked with.
Temporarily solved by a workaround... by File->Import->Open External Library and importing buttons.fla from the CS4 subdir tree. Instances correctly of type button. I can work with these.
I guess my complaint is now about implementation changes in the new version. I'm sure there are many benefits to this new version but they shouldn't come at the cost of familiar functionality of minor components.
Thanks for answering the question though, Colin.
I figured it out I think. Those buttons have AS2 code in them, which was dropped after CS6. Opening the Buttons.fla will let you see the graphics, but to use them as components you would need to recreate all the AS2 code as AS3.
It is possible to dig into the AS3 components and change the graphics, but they are complex things that are easy to mess up.
Excellent. Thank you for helping me find these. Even the instance timeline is there. Things are looking more familiar now.