I would go with 9.5.0.7 and not 9.5.0.4, since there are lots of corrections done.
I also don't understand why you are using 9.5.0.4, if you migrated "recently" to 9.5, since 9.5.0.4 is nearly 14 month old... which is for CMOD really old...
I don't know exactly what is wrong between 9.0.0.3 and 9.5.0.4, but the error you are describing is strange, at first I would have said like Justin that you are exporting things in wrong order.
So except advising you to upgrade to 9.5.0.7 (normally the IBM Support will ask you that), and since you have already open a PMR, I have no idea what could cause such error :-/