It's important to use Wall Styles. You can store Wall styles in your library, making…
Vectorworks Tip #084 – Walls – Replace Walls
When you use wall styles, you can use the Object Info palette to replace the wall style. When you replace the wall, you can choose how the new wall style aligns with the old wall. This means that you can duplicate walls and replace them with the new style, making them line up the way you want.