H4 EAD Renewal on H1B extension approved but H4 extension pending.

[ps316]

Hi,

I am looking to apply for renewal for my wife H4 EAD, due to some reason my H1B and her H4 extension were applied separately.
And my company upgraded my H1B extension later for which I got approval pretty soon on Jan 11 2018 as my I140 is already approved.

So, now can I apply for renewal of H4 EAD while waiting for approval on H4 extension? As I can see in instructions for I765, it says,

Secondary Evidence. If you do not have the evidence listed in 1, 2, or 3 above, you may ask USCIS to
consider other evidence (?secondary evidence?) in support of your application for employment authorization
as an H-4 spouse. For example, in establishing the Basis for Employment Authorization as described in 3a
and 3b, you may submit the receipt number of the H-1B principal?s most current Form I-129 extension of stay
or the receipt number of the H-1B principal?s approved Form I-140 petition.

So, only evidence I don't have from 1,2 or 3, is the updated I94 for my wife as H4 extension is applied and still pending approval.

Please let me know, thanks in advance. Also is it allowed to work on EAD when its renewal is applied?

Thanks again,
Prady