Autodesk 057B1-41A111-1001 - AutoCAD LT 2010, User Manual

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While editing a block reference in place, you either can save back or discard
changes made to the reference. If you save back changes to a reference, the
drawing is regenerated.
When the changes are saved back, the block definition is redefined and all
instances of the block are regenerated to reflect the changes. If you choose to
discard the changes, the working set is deleted and the block reference returns
to its original state.
Similarly, while editing an xref in place, you can save back or discard changes.
Objects in the working set that inherit properties not originally defined in the
xref retain those new properties. For example, an xref contains layers A, B,
and C, and the drawing that references it contains layer D. If new objects are
drawn on layer D during in-place reference editing and changes are saved back
to the reference, layer D is copied to the xref drawing.
If you remove objects from the working set and save changes, the objects are
removed from the reference and added to the current drawing. Any changes
you make to objects in the current drawing (not in the xref or block) are not
discarded. If you delete any object that is not in the working set, the object
is not restored even if you choose to discard changes. You can return the
drawing to its original state by using UNDO. If you make unwanted changes
to an xref and use REFCLOSE to save back the changes, you must use UNDO
to undo any changes made during the reference editing session. After you
have undone any unwanted changes, use REFCLOSE to save changes to restore
the xref file to its original state.
WARNING
While editing a reference in place, if you delete an object that is not
in the working set, the object is not restored if you discard changes at the closing
of the reference editing session.
Objects in the current drawing that inherit properties defined by the xref
retain those new properties. Properties taken from the xref drawing are bound
to the current drawing. The xref layer named SITE, for example, appears in
the current drawing as $#$SITE when assigned to an object not in the working
set.
If BINDTYPE is set to 0, a prefix of $#$ is added to the reference name in the
current drawing. If BINDTYPE is set to 1, reference names remain unchanged
in the current drawing, similar to names of inserted objects.
NOTE When you edit and save an xref in place, the original drawing preview is
no longer available unless you open and save the referenced drawing.
Reference Other Drawing Files | 471