This is Keane. I did the migration of my older version oracle forms to 10g by outsourcing the same to an Indian company called Code ONE Solutions
based in Chennai.
They did a wonderful job by converting our older application to 10g version in a short time and most cost effective way without any changes to our business logic.
They are specialized in migration of
Oracle Forms Version 2.3 / 3.0 / 4.5 / 5.0 / 6.0 / 6i to Oracle Forms Version 6i / 9i / 10g.
Oracle Reports version 2.0 / 2.5 / 3.0 to Oracle Reports Version 9i / 10g.
Migration of other objects such as Menu / PLL / Pro*C to the latest version.
Multi language migration which includes Japanese, Arabic, Korean, Chinease among others.
You can find useful information by visiting their site http://www.code1solutions.com
Hope your migrations work completes successfully.