Not able to copy and paste data from manager to excel

not clear what your question is but by the screenshot it is understandable that this is not a problem with Manager.

Basically im using the export function in manager to copy the data to excel/notepad. In 17.12.15 version i am unable to perform this task. In previous versions i was able to perform this task.

are you selecting the data shown in the Manager window to copy?
can you post screenshots of the the complete process you are following?