Any tools to rollback schema change and map new data to old schema?

What is the best way to rollback a schema change, but preserve the data that is in the new schema?
We are updating an application for a customer, however the customer would like to rollback to the old application if after a few days they run into a critical problem.
The application schema is changing - not a lot, but a number of tables will have extra columns.
To rollback, one would have to re-create the original schema and load data into it from the updated schema.
I thought that the Migration toolkit/workbench might have been able to do this for Oracle --> Oracle migrations, but it appears to only support non-Oracle Database migrations to Oracle.
Are there any oracle tools in say OEM or elsewhere that can handle data transformations?

Kirk,
You are correct, the focus of the Oracle Migration Workbench is on non Oracle databases.
I am not aware of a tool that can automatically do what you want, but it should be possible to do what you want. Depending on the version of Oracle they are running, it is now possible to drop columns for example. Your approach would be based on the nature of the changes. Have you looked into the OEM Change Management pack?
http://www.oracle.com/technology/products/oem/pdf/ds_change_pack.pdf
You might also post you message to Database General forum.
Donal

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Hi,
Please help me by answering this question as very urgent basis.
ABC employee Effective date should be of future dated 10-jan-2011.
But ABC employee joining date has been entered on 10-Aug-2010.
amd also this date is also ended by updating on 10-Dec-2010.
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What is the application release?
Please see these docs.
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APP-PAY-06841 When Changing Latest Start Date Of An Employee Who Was An Ex-Contingent Worker [ID 1146414.1]
Unable To Change Start Date for Employee, Get Error "APP-PAY-06841: Person Changes Exist Between The Old Date And The New Date" [ID 603233.1]
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How To Change the Latest Start Date of an Employee? [ID 329692.1]
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Hussein

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MS Project to detect task level changes and record a date modified in custom field

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AEDTM no change to the new date when delimit done

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Any tools to rollback schema change and map new data to old schema?

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