Well, there is one thing about mostCAD programs including Autocad. Later versions will open earlier files, and read them correctly.
So there is a pretty good chance that your target user of the output could open and correctly interpret a DXF that is created by a slightly earlier version. So send them an export in 2010 format, and see what happens.
Of course, there is a chance that there are features that cannot be expressed in 2010 format, but if that is not the case, it is quite possible that you can get the files transferred.
Meanwhile, Alibre REALLY needs to see how they can get 2012 format into the list. There is 2007, 2010, 2013, and 2018, but NO 2012, which is the one really wanted. Perhaps this is an ACIS issue, and can be solved only by a different Acis license. I do not know.
I DO know that 12 format is a very standard accepted DXF format, for all sorts of machinery. The fact of waterjet machines wanting it makes this very troubling, as many parts can be waterjet cut, it is a very common way of making low volume parts. In fact, I have even had sheetmetal parts waterjet cut before bending and final fabrication.
Otherwise, you may have to find an Autodesk product (even Autocad LT), import the file you can produce, and output a 2012 file.