I hit this problem maybe 8 years ago. I had completed everything except a foreign dividend.
I contacted Intuit, by email and eventually by phone.
"Everything is deleted and not recoverable".
It is, but they don't have a selective parameter, so you're screwed.
Helen's reply above - try the link you might be lucky. I had to re-enter everything again - but this time through the locally installed software. I have not used the online version ever again.