ID 416121 - When using the "Copy to group" option in a LiveGroup node it does not copy custom user knobs

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Problem summary
When using the "Copy to group" option in a LiveGroup node it does not copy custom user knobs

Customer reported version
nuke.n/a

Customer reported platform

Steps to reproduce

1) Create a LiveGroup
2) Open the LiveGroup (CTRL+Enter)
3) Create a "Grade" node within the LiveGroup, save and exit the LiveGroup
4) Right-click the LiveGroup panel  and click "Manage User Knobs"
5) Click "Pick..."
6) Add the "Multiply" function from the Grade node
7) In the LiveGroup node panel, press the "Copy to group" button

Expected behaviour
The custom user knobs should be copied to the new Group node

Actual behaviour
The custom user knobs were not copied

Workaround
Unknown.

Reproduced by support
This bug has been reproduced in:
Nuke 12.0v3 - Windows 10 - CentOS 7 - macOS 10.14.5
Nuke 11.3v5 - Windows 10
Nuke 11.2v1 - Windows 10
Nuke 11.1v1 - Windows 10
Nuke 11.0v1 - Windows 10 - CentOS 7 - macOS 10.14.5

Unable to reproduce bug in:
Nuke 10.5v1

Earliest version tested
Nuke 11.0v1 - This feature did not exist before this version

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