Inserting frames in Timeline - doesn't insert in animation...

or when to convert to animation clip vs not to? Also, while I think of it, there should be an option to insert an arbitrary amount of frames. Anyway, is there some reason to convert animation to animation clips, or a reason not to? I can still edit clips in the animation window, but I can’t see the keyframes in it which sucks for trying to line things up. But I can drag the animation along with other clips, that I can’t do if I don’t convert. Is there some best practices guide on this? Like should I get all the animation finished in my timeline then convert all to clips?