You can create a new company file from existing ones instead of duplicating it, execasst.

First, make a copy of an existing company file, then condense it to remove all transactions. Additionally, you can set up a new bank account using the newly created company file.

Here's how to do it:

1. Start QuickBooks Desktop and access the company file you wish to copy.
2. Locate the saved file by pressing F2, which opens the Product Information window.
3. Check the File Information section to see the storage location of your company file on the computer.
4. Create a backup of your company file and assign a new name when restoring it. Note: This action generates a distinct version of your original company file. Save the new file in a separate folder.

The restored backup generates a new company file containing identical accounts, lists, templates, and preferences.

Visit the provided link to access a detailed, step-by-step guide: Create new company files from existing ones in QuickBooks Desktop.

Should you require additional help managing your data, I'd be happy to assist you through the process.