How do I upload modified PDF from Kindle?

[Tabini-aiji]

I'm using the Adobe Acrobat Reader (and no, I don't care what the official name of the product is) on Kindle. I uploaded a PDF to Acrobat.com from my PC, downloaded it to my Kindle, used the Adobe Reader to read & highlight & comment, and now I want to upload the PDF back to Acrobat.com so I can get it to my PC. Unfortunately, the Adobe Reader on Kindle seems only to be able to download -- that is, it has an icon for downloading, but no icon for uploading. What can I do? Thanks.

[Guest]

I have the same trouble, have you solved the issue?