The Twitter archive feature works by requesting an archive; once an archive is ready, receiving an email with a link to twitter, visiting twitter, and downloading the archive as a zip file.
Subsequently, in the user interface within twitter.com, the option to request the archive is changed to Resend email, and no new archive can be requested.
Would it ever change back to make it possible to request an archive again, to get all the updated tweets? When / how?
Best Answer
It would appear that a new archive of your tweets from Twitter can be requested every seven days or so.
Source: personal experience of now seeing a button to request an archive again, roughly 7 days after the date of the prior archive that has been generated.