Upgrade from 1.0.1 Std Ed to 2.0 Ent Ed fails

Ent Ed 2.0 installation works fine with blank db. However, upgrading from 1.0.1 repository to 2.0 using repotools doesn't work.

The import itself works without errors, but throws an error message connecting to the db. From the webclient, here is the error: "DB2 is not valid for the property db2.vendor. The DB2 database vendor is not supported by the database license".

Running repotools -createTables and opting to overwrite the db will allow me to connect to the blank database thats created. I have 2.0 Ent Ed license deployed.

Tried https://jazz.net/wiki/bin/view/Main/DbVendorIsNotSupported , but works only when the db is empty or when I rerun the repotools with createTables thus overwriting the db.

Note: Same export file generated with 1.0.1 repotools works fine if imported to 2.0 Std Ed (different instance). So, I do not think its an issue with export from 1.0.1.

Is upgrading from 1.0.1 Std Ed to 2.0 Ent Ed a valid migration path? Or does it need to be a 2 step process? Step 1 - Upgrade from 1.0.1 Std Ed to 2.0 Std Ed. Step 2 - Upgrade from 2.0 Std Ed to 2.0 Ent Ed (using repotools)?

Any pointers?

Thanks
Sunil