Confirmed working 10:46am PST:
Sign in to LastPass web -> Advanced Options -> Export -> Verify export by email -> Advanced Options -> Export (again) -> List of passwords in CSV format.
Sign in to LastPass web -> Advanced Options -> Export -> Verify export by email -> Advanced Options -> Export (again) -> List of passwords in CSV format.
I guess Bitwarden secured itself a test-run.
edit: for clarity, the downloaded csv was defective, the csv shown seems complete. This is a problem