It copy savedatas in "\Documents\Primitier\Saves" as backup renamed with timestamp header.
(Please note that I do not take any responsibility or liability for any damage or loss caused through using this program.)
Save following text as "PrimitierSaveDataBackup.bat".
echo start backup
for %%i in (save?.dat) do (call :BU %%i)
for /F %%j in ("%1") do (set TS=%%~tj)
set TS=%TS: =%
if exist %FN% (
echo %FN% exists, skipped
) else (
echo copy %1 as %FN%
copy %1 %FN%
Execute "PrimitierSaveDataBackup.bat" and you will find the files named like "170520221019_save1.dat".
Program check existence of save1-8.dat and copy them.
Note that header style depends on your PC setting.
Normally in Japan, (Year)(Month)(Date)(Hour)(Minutes)_save*.dat
Maybe in other country, (Date)(Month)(Year)(Hour)(Minutes)_save*.dat
The headder doesn't include (seconds)