lowering roof

[K-Lynn]

I have my roof built but need to lower it due to a wall height change. I am wanting the trusses to set on the top plate. I understand I need to use the raise/lower from clg. ht  and raise off plate in the build roof dialog box but I seem to be doing something wrong. Any tips? 

 

Also, when I try this and retain edited and manually drawn roof planes I end up with a double roof. I have some roof planes I'd rather not recreate. Is there another way to lower them without rebuilding the roof? I have 3 levels to move. (garage, 1st and 2nd floor) 

 

[Chrisb222]

3 hours ago, K-Lynn said:

I have my roof built but need to lower it .....Is there another way to lower them without rebuilding the roof? 

 

Select roof plane(s), hit Transform/Replicate tool in lower Edit toolbar, click Move and enter a value in Z field.