To update the attributes in block references for a selected block definition
Block
panel
Synchronize
AttributesEnter attsync at the
Command prompt.If you specify a block that does not exist, or if the block exists but does not contain attributes, an error message is displayed.
Toolbar: Modify
II
Alternate
Block
panel
Edit
Single AttributeAt the Command prompt,
enter eattedit. If you click Cancel later to exit the Enhanced Attribute Editor, attribute changes you made prior to choosing Apply are not reversed.
Toolbar: Modify
II