only add activities to lists if the object that list belongs to still exists
only add activities to lists if the object that list belongs to still exists

Factlink/factlink-core,daukantas/factlink-core,daukantas/factlink-core,Factlink/factlink-core,Factlink/factlink-core,daukantas/factlink-core,daukantas/factlink-core,Factlink/factlink-core