I-485 ( 5 years of my employment history.)

[Diliphelp]

Hi

Need expert advice

While preparing my papers for I-485 I found that I need to provide last 5 years of my employment history.
I am working for consulting company with a Valid H1B and went to client site for 3 month assignment .After 3months assignment ,the client approach me for Permanente role and transfer my H1b. I joined the client company without inform company A and took 3week un paid vacation
After 20days of service in client company ,I resigned form client company and back to Company A. But I haven't informed to Company A
Now the question : Do I need to record this ( 20 days ) employment information in i-485 application?
OR skip this employment period in my 485 application. Because I have never quit my job from company A during this period

Thanks