Copy MegaMenu configuration (after update to 1.6)
When you update the Unicorn theme to version 1.6.1 you should manually copy MegaMenu settings.
Here are the steps:
1) Open an online theme source code editor
2) Open the settings_data.json file and search for "mega-menu"
The theme includes 12 sections for MegaMenu popups. At your store, you may use 2 or 8. Proceed with only the needed sections.
In this example, I will process sections 1, 2, 3, 4, 5, 6, 7 and 8.
3) Move mega menu nodes to the mega-menu-group.json file into the sections
4) Fill the order with the same ids as in the sections node
5) Change the type to megamenu for all mega-menu-* nodes
6) Save the mega-menu-group.json file
7) Go to the online theme editor and update the item name per each Mega Menu popup.
P.S. If these steps doesn't work for you, create a new ticket.