Rockwell Automation 20D-DL2-CKS1 Import/Export Project Components - Manual (Page 55)

Import and export Add-On Instructions Chapter 6
The Project References tab shows a list of locations where the Add-On
Instruction is called, and for each location, shows how the arguments in the
Add-On instruction will be updated to adapt to the new parameters.
Important: Beginning with version 18, when you change the parameters of an Add-On Instruction (when you add,
delete, or move), each location where the Add-On Instruction is called is modified so that the existing
arguments continue to match their previous parameters. Importing and Overwriting an existing Add-On
Instruction may cause changes to the existing logic that uses the Add-On Instruction.
Important: If the logic calling the Add-On Instruction is within a source-protected routine, and the key is not available,
the arguments are not shown or updated. Instead, the Location will be identified as Source Not Editable.
For more information on updates to arguments, see Logix5000 Controllers
Add-On Instructions , publication 1756-pm010 .
5. Click Close and then OK to complete the operation.
Rockwell Automation Publication 1756-PM019E-EN-E - October 2014 55