I was trying to export a list of emails that were blocked from being sent an email. I went to list actions and hit export list. Now the leads are gone and I can't find where they were exported to so I can upload them. How do I undo exporting a list or find the export file?
Normally, when you export the members of a list, the pop up will show a hyperlink to download the file. The screenshot already gives you a great hint though. It says "No ECIDs were exported.", so what you were trying to export contained no members and therefore there was nothing to download.
As @SanfordWhiteman said, an export will not remove a person from the database. So I would do some checks: