Some differences between the Pacbase generation and the Rational Programming Patterns generation are considered normal. Therefore, they are not processed by the migration.
In addition, IBM guarantees that the C9 generation option that is used in the migration procedures does not entail any functional difference relatively to the generation options that are used in Pacbase (C1 for example).
Finally, some differences are due to the correction, in Rational Programming Patterns, of a problem that is identified in the Pacbase generators. These corrections can entail functional differences. If they are rejected, they lead to the transformation of generated lines into specific lines.