Import-my-Rule-based-strategies

Sorry but you can import neither code-based nor rule-based strategies because WL7 is a new generation product written from scratch. But Blocks are very flexible and already let you create things that weren't (easily) possible to accomplish in WL6. We'll be adding more Blocks to fix some omissions and add even more power.

I did not find the "Buy at Close" rules-based strategies (blocks), similar to WL6. today is it possible?

Offtopic, answered here:
https://www.wealth-lab.com/Discussion/Buy-At-Close-in-Blocks-5650