I use these commands quite often so I created some shortcuts to get this in a second:
To copy an automation section to somewhere else in the same lane:
1- Range the automation section and place the cursor where you want to copy it.
2- Execute this PLE (shortcut):
To copy an entire automation lane to another track:
1- Select the automation lane
2- macro (shortcut):
Edit-Select all on tracks
Edit-Copy
3- Select the destination lane
4- Paste al origin (shortcut)
Just configure this in a minute and thanks forever…