Yes, Accompa makes it very easy to clone an existing baseline. Here are the steps:

• Access the desired baseline.
• Click  Clone button at the top of the page.
• A new baseline will be created by cloning the baseline. You will be taken to "Edit Baseline" page.
  • You can further edit the newly cloned baseline - or just click "Generate Baseline Now" button to generate the baseline with the latest versions of all the items.