QuickBooks should have overwritten rights when you're importing data from another platform, DataATW. I'll provide more details on this matter below.
Before we begin, we'd like to verify if you've checked with the benefits portal about linking your data to QuickBooks. If they can't do it directly, you can manually import your chart of accounts using a spreadsheet in Excel, Google Sheets, or a CSV file.
When you import accounts, QuickBooks will detect and notify you for duplicate names (the same name). Once they're named differently (but with the same details in QuickBooks), the system won't identify them as one. To alter this, you can merge all those known duplicates to keep your accounts organized.
Also, I've included this article to answer the most frequently asked questions about importing data to QBO: What information can I import to QuickBooks Online?.
Please keep me posted if you have any additional integration concerns or questions about importing the chart of accounts to QuickBooks. I'll be right here to help.