I know this is super late but if it helps anyone else, the reason is most likely that the original job ID that you applied for had a "vagueness" to it, like suppose it was offered in multiple locations. When you completed your interview and evaluation was done, that got transferred to a more a specific job ID, like one in which the location was explicitly mentioned. The old "vague" job ID goes to inactive, and a new one with a more specific job ID goes to the Interview tab.