How to make a Mod "Save Game Compatible"?

[catty-cb 4,413]

So I've been learning how to mod over here

https://community.simtropolis.com/forums/topic/762782-creating-mods-in-banished/

At some point in the future will want to release it, I've been thru WoB looking to see how you make something "Save Game Compatible" and haven't found anything that explains how you do this, any help on this would be very much appreciated.

[kid1293 328]

If you CHANGE anything existing, there is a crash risk.

It is mostly okay if you only ADD new material (models, icons, functions).

The game can be picky, or it can be very gentle. You have to test.
(not easy with so many mods, and situations)