Luckily, this question was sort of brought up couple weeks ago as well due to the DST changes.
FW 4.36.13.0416 overwrites the old files. It will not create another set.
FW 4.36.11.8391 will create another set of files with “_new” for each file if it exists already. However, if the “_new” files exist already then it will not create another set, but it will just overwrite it (_new files) instead.
If you constantly power cycle the V3 cameras or there’s power outage constantly when there is no internet connectivity, then the older firmware is technically more advantageous as it gives you one “extra” set of files to overwrite.