Objects that have been changed are not marked as having suspect links. Objects that are linked to changed objects are marked as having suspect links. If changes are made to both the source object and target object of a link, the link is marked as suspect at both ends. If you clear the suspect link at the source it also clears the suspect link at the target.
Currently date values are stored on the server in UTC (universal coordinated time), and are displayed in the client according to the client time zone. In version 8.0 and earlier, date attribute values did not include the information to make time zone adjustments. As a result, date attribute values in migrated data might not display as expected. If clients in multiple time zones were working on the data before it was migrated, suspect links might not operate as you would expect.