Hi Matt,
Thanks for the extra details. The v16 reload will not create a script with the "old legacy" v12 features. What I suggest is the following:
- You'll need to get your hands on the v12 software. I don't think the exact build number will matter here, so if you don't have that version, you can download the Developer Edition from: http://scn.sap.com/docs/DOC-31795.
- When you unload the database with v16, you'll get the SQL script for the schema. You'll have to manually edit that file to remove everything that's not related to your schema (e.g. remove references to sequences and SRS). The SQL script will work even if you only have statements to create objects.
- Once you've done that, just create a new v12 database and reload your SQL script. You'll now have a v12 database.
Hopefully this makes sense. Please let me know if you have any questions.