Do we have to copy site\mods and attachments folders twice on the step 2 of Swing Box Method?

Document ID : KB000105202
Last Modified Date : 06/08/2018
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Question:
According to the step 2 of the Swing Box Method on SDM r17.1 document, we need to copy site\mods and site\attachments folders twice on Step 2-6, 7 and 2-22 and 23  as per below. Are they correct steps? If yes, why do we have to copy them twice?

--- From the manual --- 
Step 2: Prepare the Swing Environment and Replicate Production to Swing 

6.Copy the site\mods directory that you backed up from current production and put in place on SWING-APP system. 
7.Copy the site\attachments directory (or whichever attachments directory) you backed up from current production and place it on SWING-APP system. 

and 

22. Copy the site\attachments directory or any other attachments directory that you backed up from current production and place it on the SWING-APP system.
23. Copy the site\mods directory you backed up from current production and place it on the SWING-APP system.
---
Answer:
The document states wrong steps. You do not have not copy site\mods and site\attachments twice. Please skip the second copy on step 22 and 23.
Additional Information:
Use the Swing Box Method to Upgrade to CA SDM 17.1