It doesn't seem possible that you can convert .edrw files from SolidWorks to anything else, as these are so called eDrawings, CAD files only meant for publishing and viewing not for further editing.
You will need the original source and export it to DWG format instead instead of exporting it as an eDrawing file.
This conversion entry was verified by us and conversion was flagged as wrong or not possible.
Usually this happens when the conversion would try to convert different types of data between each other, such as audio to image, or it is not possible because incompatibility between programs, caused by closed file formats, very limited support etc.
If you find entry that you feel is flagged as bad wrongly, please tell us in the discussion below with as much as information as possible so we can fix it.