How to CLEAR a text conversation with iOS 7?

I have an iPhone 4 and just updated my software to iOS 7 last night. It's a big change. I used to be able to go to a conversation with someone click edit, then clear all. This would erase my texts with the person but not the actual contact of them in my messages. I know this sounds dumb and confusing but I would really appreciate any help!

Double tap any text bubble. Then select "more" and then ' delete all'. Then 'delete conversation'

is this easier than iOS 6? NO
or you can hit the garbage can in bottom to delete just that bubble.
seems like change for change sake. Not for the better.