Test Results Location (Temporary)

When I run my Test script, a pop up window is displayed where I can select the test results location. If I select 'Temporary Run Results Location', the location is <system drive>\Temp\TempResults. Ideally, the location should be same each time I run the test and it should overwrite the existing results. But sometimes, it creates a new folder as TempResults_1 etc.... Could anyone please let me know if their is any logic behind this.

There is no logic behing it by default store the result in the place in which it is defined
I think it store in one place only