What does the double head arrow means in my chart of accounts

Good to hear form you, kcandido.

If you're referring to the double-head arrows for the bank and credit card account in the Chart of Accounts, it means you connected them to Online banking. All connected accounts for bank feeds will show a double-head arrow in the Type and Detail Type columns.

For more details about connecting bank and credit card account in QuickBooks Online, you can check out this article: https://community.intuit.com/articles/1776857.

I have a link here where you can find articles about Online banking: https://community.intuit.com/browse/quickbooks-online-intl-banking.

Please reply to this post if you need anything else in the Chart of Accounts. I'd be glad to answer them.