Question regarding work experience(Australia 189 PR)

Hi,

I am filling the VISA application for Australia 189 PR. As part of my work experience, during one of my previous employments, I have travelled to USA for 13 months, During my ACS skill assessment, I have not mentioned this because, I did not had any separate offer letter or relieving letter for this assignment. Also, my designation did not change during that assignment.I got the service letter and relieving letter from original offshore organization stating that i have been working with them the entire(both onshore and offshore) time period. I have mentioned all the travel details clearly in my FORM 80. Now, should I mention the onsite organization name separately in the 189 PR application or should I just follow what i have mentioned during ACS ?

Appreciate your suggestions and help.

Thank you.