fix(integrations): accept persisted IDs when updating (#6985)

apps/docs/docs/management/integrations/index.mdx

@@ -52,6 +52,9 @@ used by widgets that open the service.
 Integrations can also be created while adding content to a board. Editing a connection from a widget updates that
 integration everywhere it is used.
 
+Existing integration IDs are preserved when editing, including IDs containing hyphens from externally seeded data.
+Changing settings requires full access to that integration; IDs do not grant access.
+
 ## Permissions
 
 | Level    | Allows                                                       |