It was a Hail Mary. In the old days, "Print to File" didn't just create an image; it created a vector description of the drawing data.
[RLD file] → Parser → Intermediate Representation (IR) → DXF Writer → [DXF file]
Some converters also embed tool information as XDATA (extended entity data) in DXF.
User 'CAD_Junkie': There is no direct converter. The format uses a compressed binary header. You have two choices: print to PDF and trace over it (good luck with 3D), or write a script.