Symptoms
Copy/paste works on List View rows in IE9, but not IE11 on 4.6.9.
Diagnoses
4.6.9 was the first K2 version to officially support IE11. Due to differences introduced with new browser standards, the existing copy/paste functionality does not work in newer browser versions, including IE11 , Chrome, and Firefox.
Resolution
Copy/Paste functionality for IE11 and other modern browsers is slated to return in 4.7.0