Applying Bundles
8.9 is continually being updated with tax updates. 9.1 Feature Pack December 2010 has multiple bundles and tax updates to be applied.
Documentation states to not apply application fixes, bundles or maintenance packs during upgrade pass, you may break data conversion scripts.
I have a response from My Oracle Support to apply these bundles and tax updates after initial move and prior to begining of Test Move to production, this will carry bundles throughout the upgrade process.
Any thoughts?