Break perspective groups apart
Breaking a perspective group apart removes the perspective field while preserving the appearance of the objects in a perspective group. The perspective group becomes a regular group that can be manipulated and edited as you would any other group; each object in the group keeps its perspective effect. However, you will no longer be able to edit the objects in perspective.
The perspective group (left) was broken apart and then rotated (right).
To break a perspective group apart
You can also control-click a perspective group, and click Break Perspective Group Apart.