Understand what happens when the enhanced NXT integration is disabled

For GiveCampus integrations and API.

For the Blackbaud enhanced constituent import, disabling it stops future enhanced-import processing; the settings handler and import entry point do not delete previously imported data as part of turning it off. Existing data can remain and stop refreshing from that source, while other enabled imports may still update overlapping fields. Basic import is a separate setting. Data deletion requires a separately reviewed cleanup; confirm this is the enhanced RE NXT integration before applying the guidance to another connector.