Application link improvements

The following application link improvements have been made:

• A new value 2 has been added to the application links CheckBlankPropertiesAssigned client registry settings to force mapped document properties to empty if the file properties are either Empty or Null.
• The AutoCAD link now supports title block synchronization using dynamic blocks.
• The AutoCAD link now supports title block synchronization of multiple title blocks in the same drawing with different values.