Error in quantity determination

[Anonymous]

at the wall 1 is no conclusion of the opening.
at the wall 2 is conclusion at the opening.

with the wall 2 more quantity must be counted. but it has remained 0,272 m³

The question is, why did not the quantities of gypsum board change?

[barthbradley]

Wraps have no BIM value. That is, they cannot be quantified. They are cosmetic only. It's been a beef of mine and others for years.  Been posted about many, many times.  

...the only solution is to actually model the wraps.