Changing your source locale can lead to articles disappearing and is not recommended. If you want to change the source locale, you should ensure the following:
- You will need to edit the knowledge base name and description to make sure they are in the new source locale.
- If the knowledge base has categories defined then you will have some editing to do to change the names into the new source locale.
- If you have articles in the knowledge base then you should make sure that they are 100% translated before changing the source locale or else you will be left with some orphaned records.
In general, the source locale of a knowledge base is a fairly major decision so take care when creating a knowledge base in a multilingual environment.