The rule that was implemented is one of those that 'looks good' on the surface - they would stop partnering with any organization/group that was under investigation. Looks good - you don't want your good works tarnished by working with criminals, after all.
The fact of the matter is, though, being under investigation is not the same as being convicted of an offense (ref. HUAC). Also, two other organizations - Penn State and Bank of America - are still partners with SGK despite both being under investigation (Penn State for failures of reporting criminal activity, and BoA for its involvement in the mortgage crisis.)