Let me share some insight on the transactions shown in the balance sheet and profit and loss (P&L) reports.
Assets and liabilities are shown in the balance sheet, and income and expenses are in the P&L. To move the transactions, we'll have to open each manually and assign the account to income and expenses.
We can reclassify or move the transactions once if you're using QuickBooks Online Accountant (QBOA) or Online Advanced.
In QuickBooks Online Accountant:
Open your QuickBooks Online company.
Select the Accountant Tools, then Reclassify transactions.
In QuickBooks Online Advanced:
Open your QuickBooks Online account.
Go to the Gear icon, then Reclassify Transactions.
Then, reclassify the transactions. I'll guide you on how.
From the Account types drop-down arrow, select Balance Sheet to see your asset, liability, and equity accounts.
Select the account with the transactions you want to change in the Account list.
Use these types, classes, customers/vendors, and modify filters.
Select Find transactions.
Tick the checkbox for each transaction you want to change.
I'm also adding these handy articles. It will help you manage and edit reports in QuickBooks: