Hello
Did you experience any move to another install of the Veronika categories ?
I tried to move the 2 tables of the DB and import but had issues with the foreign keys. So it was impossible this way.
Tried to use a plugin that promised to export/import categories. Did it but of course with no categories colors or fa icons.

Do you have please any other idea ?

Thank you.

@Daniel
Theme stores it in table category_veronika

You are totally right. forgot about it.

So, for the others:

I exported the following tables:

t_category
t_category_description
t_category_stats
t_category_veronika

I had to deselect "check foreign keys" on import via PHPMYADMIN.
Also, for some reasons, I imported table by table.