Where is my redo shortcut? It's been replaced by merge down option!

Tech Support Basics & Interface
1

Hello,

Suddenly, the redo shortcut for a brush stoke (Ctrl+Shift+Z) has been replaced by “Redo merge down”. I cannot find an option for redoing a freehand brushstroke. I don’t recall messing with the shortcut menu. I clicked “Restore Defaults” button but there is still no change. Am I missing something? Please help!

2

Okay, now it’s gone back to “Redo Freehand Brush Stroke”. I think I fixed it by changing my tablet button to a different one then back to Ctrl+Shift+Z.