How to duplicate fields with styling in v2.9.54 ?

Hi everyone,

How can I duplicate a field (radio-list) WITH its styling in v2.9.x ?

I am trying to create a 15-questions client survey. I use a radio-list field for every question. I am styling the radio-list field (background, corners, text) using the Layout&Styles add-on.

When I try to duplicate my styled radio-list using favorite fields, it doesn’t keep the styling. Only the content is duplicated, but not the styling.

You can have a look to my form here :
https://www.salsa-brest.fr/enquete-satisfaction/

Thanks in advance for any help.