This format is not intended to be used for normal data storage. It is supported so that in case of a problem, you can supply the KMyMoney development team with your file without disclosing any of the confidential details in your financial data. For example, it changes institution, account, payee, and category names to strings such as "I000001" and "A000001", it makes similar changes to all data such as account numbers, and it also randomly changes the amounts of transactions.

If instructed by the developers, use the Save as... menu item to store your data in anonymous format by selecting Anonymous files as the filter. This also changes the file extension to .anon.xml.

To verify that your problem still exists, reload this anonymized file and try to duplicate your problem. If the problem is still present, send the file to the developer mailing list at (kmymoney-devel kde.org) for further investigation. If the problem does not show ... well, I don't want to think about this scenario right now.