Doubled automation lines when copying from Summing Stack

My kit:

MacBook Pro M2 Max 32GB

Logic Pro X

Plugin: Spitfire Audio BBCSO Core

MIDI controller: Behringer FCB1010

What I love: I can use my MIDI keyboard and Behringer foot pedals to play an entire orchestra section, with expression controls and articulation switching, in realtime. I can record a part with automation in the Track Stack of a section, then copy that recording into individual instruments (subtracks) of the section.

My issue:

When I copy the recorded part, the copied Automation lines appear TWICE in the copied-to track. I then have to "Delete visible automation" before I can edit the line without creating interfering automation controls.

CC14 is set to Dynamics in the Spitfire plugin

CC15 is set to Expression in the Spitfire plugin

See this video link for more information: Automation doubling issue

A thousand thanks if you can help!!