Inserting ACLs in CN=config

Hello, from reading the AdminGuide and a quick search through the FAQ-o-Matic I couldn't gather how I'd insert a new ACL between the existing rules 2 and 3...

Do I have to replace the complete olcAccess-Attribute? Or can I somehow instruct an LDIF - "Modify/Add" to insert the Value in a specific place?

If it isn't available now, maybe it could be done with using only even Weights for the rules, and when one adds a rule with an odd weight, it is inserted in the correct place and the remaining entries renumbered accordingly...

bye Christian