I am a little confused with the Undo-Redo.
Like the title of the post says, I deleted a sequence and undo won't bring it back to life...
Same with renaming a sequence and wanting to go back to the previous name
Undo/redo is mostly for editorial actions,although I thought it "might" have done text editing undo/redo. But it definitely does not undo deletions. You need to open the attic and find the last version of the bin and retrieve it from there.