Foundation Question

[Fredo649]

I am trying to change a foundation on a new home , a lot of the foundation is 10" concrete block 6 courses with 2" rigid foam insulation on the inside . I need to change a few walls to 8" concrete block but when I highlight the wall and  change all the walls change but I only highlighted that one wall.

What do I do differently to change one wall at a time ?

Thanks. 

[Rookie65]

Create a new wall type from that one.