Tick the box next to the export’s directory and click “Download”
This will give you a command to copy to complete the download from the shell. Run this command.
The command will fail if run against the wrong project. You can change the project by running gcloud config set project <project-id>. Get the project ID by clicking the project dropdown at the top of the Google Cloud Platform console. Project IDs will be listed for each project.
Extract the downloaded file
Switch to the destination project in the Google Cloud Platform console GUI
Upload the directory extracted from the download to a storage bucket using the “Upload Folder” button
Go to the import/export page for the destination project
Click the “Import” button
Click “Browse” in the file chooser and browse to the uploaded backup
Select the top-level file with the extension .overall_export_metadata