Dutch Charts of Account ctype mistake

I discovered strange behaviour when starting the company with nl_NL-default-220 charts of accounts.

With the account classes it reported errors (gl_account_classes.php). I think it's because of the initial values in the table chart_class:

INSERT INTO `0_chart_class` VALUES ('1', 'Assets', '1', '0');
INSERT INTO `0_chart_class` VALUES ('2', 'Liabilities', '1', '0');
INSERT INTO `0_chart_class` VALUES ('3', 'Income', '0', '0');
INSERT INTO `0_chart_class` VALUES ('4', 'Costs', '0', '0');

The USA one shows:

INSERT INTO `0_chart_class` VALUES ('1', 'Assets', '1', '0');
INSERT INTO `0_chart_class` VALUES ('2', 'Liabilities', '2', '0');
INSERT INTO `0_chart_class` VALUES ('3', 'Income', '4', '0');
INSERT INTO `0_chart_class` VALUES ('4', 'Costs', '6', '0');

And which I changed the values for the field 'ctype' it worked oke and I could also change the descriptions.

Did I change correctly or could this cause other side effects?

Regards,
Bob