wildfire4 config.pro option documentation for: SAVE_INSTANCE_ACCELERATOR            

save_instance_accelerator

saved objects, none, explicit, always

determines how instances are saved with the family tables of solid parts.

saved objectsosaves instance accelerator files if,

• the instance is modified in one of the following ways.

• feature redefinition

• feature rerouting

• reference replacement

• feature reordering    

• component replacement

• object integration