Just activated 6.1.6 and have several problems. First, I activated then deactivated the import options plugin. Then I renamed the old swift folder. Then I uploaded and activated 6.1.6. Here are the problems I've found so far:
The header background has extended into the top menu and both top and bottom menus have lost their background colors.
The homepage background has been lost and is now white.
The site experiencing these problems is:
The site should look like this:
I also tried reverting to the renamed swift previous version but upon previewing noticed all kinds of problems...so it doesn't seem like I can switch back seemlessly.