If you need to change the configuration of the engine, as long as the inheritance ({assets}/res/server/kbengine.xml) this configuration file and overwrite the corresponding section kbe/res/server/kbengine_defaults.xml, but doing so will not damage the engine settings, there is no conflict in the development along with updated engine or multiple projects.
###Overloaded default configuration examples:
<root>
<trace_packet>
<debug_type>0</debug_type>
</trace_packet>
<app_publish>0</app_publish>
<!-- defined => kbe/res/server/kbengine_defaults.xml -->
<dbmgr>
<databaseInterfaces>
<default>
<host> localhost </host>
<databaseName> kbe </databaseName>
</default>
</databaseInterfaces>
</dbmgr>
</root>