SPACEMAN uses ALT>drag on multiple keyframes to reposition them in time and in relation to each other.
SPACEMAN uses ALT>drag from project window to a selected layer,
thereby replacing the selected layer with new content, whilst
retaining all keyframed variables.
SPACEMAN has never duplicated keyframes by ALT>drag.
SPACEMAN wonders if COWDOG woofs or mooos….
SPACEMAN needs spaceship parts, not expressions…