EU4 Converter modding
The Europa Universalis 4 Save Converter is a DLC that was released together with patch 1.11.
In order to modify it, you need to edit the Crusader Kings II\eu4_converter\ folder, all files related to the EUIV converter are stored there. The vanilla files were moved inside /dlc/dlc030.zip.
Modifying the converter does not change the checksum of the game.
Inside province_table.csv, what province in Europa Universalis IV a Crusader Kings II title converts to is defined.
The format of the file is the following:
CK2 title ID;EU4 province ID;EU4 province ID - EU4 province name (filename);CK2 title name - EU4 province name
Here is an example:
c_vestisland;370;370 - Reykjavik;Vestisland - Reykjavik
In the example, c_vestisland is the title ID in Crusader Kings II (title IDs are defined in the \common\landed_titles folder), 370 is the province ID in Europa Universalis IV, while 370 - Reykjavik is the province ID and name in Europa Universalis IV (which is the filename in the \history\provinces folder) and Vestisland - Reykjavik are the title name in Crusader Kings II and province name in Europa Universalis IV.
Both duchy and province titles from Crusader Kings II can be defined, but in case there is both a duchy and a county for the same Europa Universalis IV province, the duchy needs to be specified, by adding Duchy before the Crusader Kings II title name.
Here is an example of that:
d_munster;375;375 - Munster;Duchy Munster - Munster c_desmond;375;375 - Munster;Desmond - Munster
This is also the case if there is a duchy and a county with identical names, then both the duchy and the county need to be specified.
Here is an example of this case:
d_leinster;374;374 - Leinster;Duchy Leinster - Leinster c_leinster;374;374 - Leinster;County Leinster - Leinster