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As a service to our customers, we are cataloguing this known issue and its fix.

When running an NX Nastran Structural SOL 103 Flexible Body solution in the Pre/Post application, the modal content of the generated OP2 result file will contain an incorrect set of modes. This issue will not prevent the successful completion of any Motion flexible solutions, but results will be affected by an incorrect definition of local stiffness at any interface points between the flexible link and the mechanism. Customers please login for more details.

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