Since you did not actually ask a question it is kind of difficult to help here.
Do you want to know how to open a Tulip generated file in yEd? If so, I am afraid yEd cannot read Tulip's native file format. You will have to find a way to either store your Tulip generated graph in a format that yEd can read (e.g. GraphML, GML, XGML) or find a way to convert Tulip's native file format into a format that yEd can read.
Or are you already able to open your Tulip generated graph in yEd and are wondering why the layout in yEd does not match the layout in Tulip? In this case, exporting to/converting into one of yEd's supported file formats probably lost the geometrical information associated to nodes and edges.