Backward Compatibility with Version 4.3a

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When using version 5.2a, in the Solid Mechanics interface, the property ControlsSpatialFrame from version 4.3a no longer exists, and COMSOL Multiphysics now always assumes that the displacements control the spatial frame. Remove all lines setting the value of ControlsSpatialFrame. See Support Knowledge Base article 1156.

•	When opening old models that include contact, the penalty factor control is set to User defined and the contact normal penalty factor is set to the expression used in the model.