I need to update my Quickbooks: new business name, new bank account, and need edits to lists. Need help.

Hello there, Don. I see that you've posted the same concern twice.
 

I've already responded to your inquiry regarding updating your company name and bank account in QuickBooks Desktop. You can review my response through this link: https://quickbooks.intuit.com/learn-support/en-us/account-management/we-changed-the-structure-of-my-business-from-sub-s-corp-to-sole/01/1381716#M79223
 

I'm still all ears if you require further assistance and clarification about updating your company information. Please let me know by adding a comment below. I'll always have your back. 

@Don_Bogart 

Open your old company file and create the backup file. Restore the backup file and save it with a new name. You can modify everything in the new company file later.