This feature request arises from this discussion:
http://forums.autodesk.com/t5/design-validate-document/unlinking-3d-object-rectangular-pattern/m-p/6...
Here is a use case:
1) Create a 3D object.
2) Create a matrix pattern of this object, e.g. 10 x 10 matrix rectangular pattern
Objects in this matrix is automatically linked at creating time,
meaning if you change one of them (e.g. the reference object)
the changes propagate to all of them.
3) Now unlink all the 3D objects in this matrix of rectangular pattern.
When this rectangular pattern is unlinked, each object can be edited (moved, re-sized, cut,...)
independent of other objects.
Meaning its changes does not propagate to other objects that are also now unlinked.
This feature is not currently available.
