Will re-installing the Statistics Collection Agent erase statistics data?
If you un-install and re-install the Statistics Collection Agent, will you lose the statistics data that has already been collected?
The answer is no. The statistics data is generated by the mail agents, and stored in the emwstat.dat file in each agent's folder. The statistics collection agent then collects the information from these files, and stores it in the SQL database.
You will not lose statistics data by re-installing this agent, because re-installing it does not affect the emwstat.dat files or the SQL database.