Trade debtor, Other Debtor, Trade creditor and other creditor REPORT

You should be using the regular AR and AP accounts for business trade only. If you have other debts and receivables that are not part of your normal course of business then you should be tracking them in other accounts than AR and AP. You won't be able to get aging reports for them, but you need to set these up anyway if you have non-business receivables and payables. Set them up as an Other Current Asset called Loan Receivable or whatever it is assumming it's due in under one year. Make it a Long term asset or liability if longer. No non-business expenses should be entered in the Enter Bills screen. Only business related bills are entered there. Use the Write Checks for all other receivables and payables.