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Ok, all understood; thanks!
Regarding the taxes: we mailed our taxes for 2021 in April 2022. Still have not heard from IRS - with known pandemic delays from IRS. should we upload taxes from 2020, 2019, 2018 instead; OR can I upload 2021 copy, along with previous two years, knowing that we might get a response from IRS sometime soon?
Also, found this document on USCIS web site that seems to state that I do not have to upload anything other than copies of my green card for my type of case:
https://www.uscis.gov/sites/default/files/document/guides/M-477.pdf -
the document is dated 2016 - not sure if still applies.
Nonetheless, I am leaning towards your value-able advise of submitting all I have so that we won't have to go through RFE etc - if USCIS would safely ignore the documents that do not applicable.