Average Time spent on site metrics is messed up since we had two page load server call for particular domain. Now the issue has been rectified. Is ther is any way we can do calculated metrics for historic data?
Not possible to make changes in historic data.
Since there were two page load server calls in the historic data, you can reduce the final value of average time spent marginally. But for me, average time would be fine, as the server calls would have happened simultaneously.