Selecting/Delete multiple walls

[Designer_Ryan]

Over-time, I have changed wall types. Therefore, when I copy/paste and existing drawing into a new drawing I keep getting multiple wall types with _2, or _3 after them.

I have selected Delete All Unused walls not used, but since they are being used they won't delete. I have constantly used the object eyedropper to change the walls, then reselect Delete All Unused walls. Sometimes it works, and sometimes it doesn't.

Is there a way to somehow be able to choose a wall, select all of those walls at once, then change them to the most current wall, so I can Delete All Unused walls again to get rid of them?

Or, is there a better way? 

Here's a pic to show you.

Thanks in advance.

 

[Designer_Ryan]

5 minutes ago, Designer_Ryan said:

Over-time, I have changed wall types. Therefore, when I copy/paste and existing drawing into a new drawing I keep getting multiple wall types with _2, or _3 after them.

I have selected Delete All Unused walls not used, but since they are being used they won't delete. I have constantly used the object eyedropper to change the walls, then reselect Delete All Unused walls. Sometimes it works, and sometimes it doesn't.

Is there a way to somehow be able to choose a wall, select all of those walls at once, then change them to the most current wall, so I can Delete All Unused walls again to get rid of them?

Or, is there a better way? 

Here's a pic to show you.

Thanks in advance.

 

FYI- I've selected a wall, then Marquee Select Similar, Select All Similar. But, all the walls get selected.

[solver]

9 hours ago, Designer_Ryan said:

when I copy/paste and existing drawing into a new drawing

 

Why are you doing that and not starting from a template each time? Tell us more about your process.

 

Walls are often connected to defaults and will not be deleted -- program sees them as used.