Disconnected Integrations:

A connected integration can be disconnected due to many reasons. The API key might have expired, the person who authorised the connection may have left the organisation, or their permission levels might have changed. 

When an instance is disconnected, instead of connecting a new instance, you can reconnect the previously disconnected instance. You can use previously used credentials, for instance, and new credentials to reconnect the instance. So, the API call triggered for the same instance will completely update the old data associated with the instance with new data fetched, leaving no chance for stale data or any data discrepancies.

Multiple instances:

Zluri allows you to connect multiple instances of the same application. It should be used when you have multiple accounts of the same application. The same account should not be connected multiple times since it might result in data discrepancies.