H1b Transfer Document?

Hi everyone. I got my h1b approved in 2016. Now I am working on the H1b transfer. It is small company and I am not sure the lawyer is very clear. I know we need to provide the paystub, approval notice, offer letter, i94, passport et al.  However, I have a question: is it usually required to provider all previous I20s, EADs or even resume?

Sorry for no pinyin in my computer.  Thanks very much.

我不是在这里读书的，所以I-20什么的就不知道了，但Resume是肯定需要的。

反正律师会要几乎所有的文件，准备好扫描件就行了，包括护照的所有页