As an organisation, you have a virtual account within Immo-Connect, called 'Wallet'.
You can consult and manage this Wallet, by (after logging in) by clicking on your name at the top right, followed by the organisation.
In the menu you choose "Wallet".
On this page, you will see the balance of the Wallet with a table of your transactions underneath.
You can sort and filter this table.
By clicking on the "export" button, you can export the filtered transactions in a CSV file.
You can then open this file in Excel and edit it there.