VBA- Match two lists

Goal-
Make the two lists match while preserving comments on 'Updated'

Given:
Sheet 'Data' contains an updated list of items and associated data
Sheet 'Updated' contains previous list of data which may or may not match 'Data'

Each Product has a unique identifier (ex Item 1) to use for look up.

Example: Item 1 is on 'Data' but not on 'Updated'
If Item exists on 'Data', but not on 'Updated', Copy A1:I1 to 'Updated' to next open cell on column A:I.

If Item exists on 'Updated' but not on 'Data', Delete entire row


Thanks in advance!

What is the need of doing this. At the end, you'll end up with 2 identical lists being identical to Data. I would understand if you wanted a report on New Items or DELETED items. But you are only modifying the Updated list to be the same as the Data one. Or there is something I did not understand.