The Copy button is unavailable (grayed) until one or more adjustments are selected with no workpaper reference attached.
When you select the Copy button, the application notifies you that the item was copied successfully to the clipboard.
The Paste button is unavailable (grayed) until an adjustment has been successfully copied.
The Paste button is unavailable (greyed) until a journal has been successfully copied.
It's not possible to copy imported or automatically generated journals, such as Opening Balance journals, as this could cause duplicated values.