Keyframe Paste Offset Value

LEFT_KEY

Left Key.

Paste keys with the first key matching the key left of the cursor.

RIGHT_KEY

Right Key.

Paste keys with the last key matching the key right of the cursor.

CURRENT_FRAME

Current Frame Value.

Paste keys relative to the value of the curve under the cursor.

CURSOR_VALUE

Cursor Value.

Paste keys relative to the Y-Position of the cursor.

NONE

No Offset.

Paste keys with the same value as they were copied.