Static data that is only referenced but not saved in save game data were until now referenced by made up ordinal number. Process of assigning a number to an object is highly sensitive to content change and results with incompatible save data. Adding new technologies or rearranging old ones is very likely to change which number is assigned to which technology. This is rather inconvenient for development and modding where changes should be tested on previously set up game situation.
Static data that is only referenced but not saved in save game data were until now referenced by made up ordinal number. Process of assigning a number to an object is highly sensitive to content change and results with incompatible save data. Adding new technologies or rearranging old ones is very likely to change which number is assigned to which technology. This is rather inconvenient for development and modding where changes should be tested on previously set up game situation.