You should be able to save it as a .tax2022 data file. In fact people always ask how to save the pdf because they can only save the .tax file. Is there a button to amend? That will download the .tax file.
How to finish a return you started online
https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-finish-a-prior-year-return-that-i-...
