Option "Transfers as Income and Expenses"
When the option Settings ▸ Advanced ▸ Transfers as Income and Expenses is enabled, transfers are counted as income or expenses, but only in relation to the current account or group of accounts. If "All Accounts" or another group within which the transfer occurs is selected, then such transfers are not considered income or expenses.
For example, when you withdraw money from a card and place it in your wallet, the amount on your card decreases, and the amount of cash in your wallet increases. Thus, for one account it is an expense, and for another it is an income. If you select as the current "All Accounts" or a group that includes the "Card" and "Cash" accounts in the side menu, the transfer will not be taken into account in the total amount as an expense or income. After all, if we consider both the card and the wallet as a whole, then their total amount has not changed.
The exception is transfers, the left and right amounts of which differ. Most often this happens when making transfers between accounts in different currencies. The difference in amounts, in this case, will be considered an expense or income, even for internal transfers.