As the saying goes, "don't tell anyone when you're stupid." Here I am, however, boasting.
Shortly after Horsch AgroVation, I began editing Silverrun, but I was unable to get the map to load. Until I double-checked the original. The gdm that I attempted to convert to 12 6 6 wouldn't work with the Python script since the original's FoliageMultiLayer was 11 6 6. After a few hours, I discovered that adding my multifruit would suffice with 11 6 6 and that there was no need to convert it.
Here it is, then. All of the new fillTypes and factories are there; they only needed to be added to my fillTypes.xml and other xml files.
Have fun! You may get more information about the additions on the Multifruit Prefab or my Riverbend Springs Edit.

Source: Jinkou89