what is object chgload

I made a copy of database A by rman backup on server A , restore it on server B and renamed it as database B. Everything in DB b looks the same as the original database A until one day, when I try to impdp a schema, I got an error saying object CHGLOAD doesn't exist in B.

I searched objects Database A in sql developer , I found it in sys schema, but not sure what is the object type it is,

I searched objects in DB B in sql developer, I don't see this object.

I query dba_objects by filtering the object_name and subobject_name with %chgload%, I don't see a record in either A or B.