Canvas scan to Chief plan

[SBLindsey]

When I copy a scan from Canvas, the roof/ceiling dimensions are not copying correctly so my plan is wonky and unusable.  I've attached the Warning I get when I'm copying it into Chief and screen shots of what I've copied into Chief and the correct Canvas scan, and the view after I tried changing the hip roof to a gable.

 

Is there something I can do to correct this?  I've tried making the wall heights the same.  Thank you for your help!  Lindsey