Some projects will not open in Microsoft Project (MSP) when exporting from Clarity with the MSP New Driver.
For steps on how to enable XML if it is not being generated automatically in the workstation's documents folder, see XML, MPP and MSP Logs for Troubleshooting MSP Issues.
In 15.7 and lower, this issue is due to using an unsupported method of copying and pasting tasks in MSP (highlighting of an entire row and pasting it). This copies the Text3 data that contains task unique information into the second task.
Use the supported method of copying and pasting of tasks in MSP when working with Clarity documented at: MSP copying and pasting tasks - supported method for Clarity
Starting in Clarity 15.7.1, an enhancement has been allowed to support copying and pasting of tasks.
Note: After implementing the below solution:
If the above doesn't solve your issue, see KB: MSP opening projects - known issues with Clarity
See MSP: Copying entire task rows duplicates or moves some tasks for a defect that may cause similar symptoms - fixed in 15.9.2 and 15.9.1 patch 1.
For other MSP Clarity issues see: