Rockwell Automation 20D-DL2-CKS1 Import/Export Project Components - Manual (Page 53)

Import and export Add-On Instructions Chapter 6
The Collision Details button lets you view the Property Compare tab, which
shows the differences between the two instructions, and the Project References
tab, which shows where the existing Add-On Instruction is used and how the
arguments are updated to locations where the existing Add-On Instruction is
called.
When you must update an instruction to a later revision, you can import it from
an .l5x file or copy it from an existing project. You must be offline to update an
Add-On Instruction.
Follow these steps to update an Add-On Instruction to a later revision by
importing it.
1. Right-click the Add-On Instruction folder and choose Import Add-On
Instruction.
2. Select the file with the Add-On Instruction and click Open.
3. From the Operation list on the Import Configuration dialog box, click
Overwrite.
Update an Add-On
Instruction to a later
revision using import
Rockwell Automation Publication 1756-PM019E-EN-E - October 2014 53