Hey BB I just tried tractor swathing and swathing plus. I realised you can't pick up sorghum or long rice.
So after figuring out where to change this I just added both swaths to the fillType xml. While it does throw warnings if swathing plus is not installed I find this acceptable for compatibility purposes. Also it would be weird to add it to swathing plus as then you could only pick up sorghum and long rice and not wheat etc.
My motivation: I don't use the factory because I do it the Ropa style. Pick it up with a forage harvester, drop it and then process it with a combine the normal way.
If you could add that even just as a temp workaround i would be quite thankful.