How to sort migrate TNS entries from OID 10.1.2 to OID 11.1.1.6

Hi all,

I'm doing an OID migration using an ldapsearch command to obtain an LDIF file of the TNS entries, and a subsequent ldapadd command to load them into OID 11.1.1.6. My problem is that the LDIF file is not sorted in terms of the objectclass going from parent to child (i.e. objectclass=orclNetService -> objectclass=orclNetDescription -> objectclass=orclNetAddressList -> objectclass=orclNetAddress) which causes the ldapadd to fail once it sees the child without having loaded the parent. How do I get the sorted entries, or is there another way of going about this load. There are 1,000 of entries so manual edits are not practical. Below are