Before version 7.5.2, if you dragged an element inside another element on a diagram, the element would automatically be reparented in the browser. In the current version of Rational Rhapsody, this behavior has been changed for models that use the SysML profile. If you would like to restore the previous behavior, you can set the value of the General::Graphics::UpdateModelFromGraphicChange property to True.
Before version 7.5.2, control flows were displayed as solid lines by default. In order to increase compliance with the SysML specification, control flows are now displayed as dashed lines by default. When you open an existing model in version 7.5.2, the control flows on the diagrams are changed to dashed lines.