SD card - Meta Data missing with key word : keywords = [b'%START AT', b'%Total time mS,etc]

So, I have been using the same 16GB san disk sd card this link mentioned: https://docs.openbci.com/Cyton/CytonSDCard/

However when I begin the SD card recording by clicking the "Write to SD card option" after the board has been turned on, maybe after 26 mins like the example below, I just get the %STOP keyword that corresponds to the write time start since the board was powered on.

When I want to finish the recording I just click the stop session button on the gui, and then once it returns to the dashboard, I just close the GUI window.

Why is there no end meta data as mentioned on the website which has keywords such as:

keywords = [b'%START AT', b'%STOP AT', b'%Total time mS:', b'%min Write time uS:', b'%max Write time uS:', b'%Over', b'%block, uS'] " ?

The below is just a snippet from one 24 hrs SDcard file.

b'%STOP AT\n
0019E288\n
00,000000,000000,000000,000000,000000,000000,000000,000000,000000,000000,000000,000000,000000,000000,000000,000000,EC90,1040,1150\n
01,FD15A4,0FD096,0385BD,23084C,172D29,12F18F,0B5A58,03F939,0AF7C0,042BE3,0CAB1A,05EFBE,0841B8,0C079F,00DA3D,F6D5B5\n
02,FD18A6,0FD0F5,0380CD,230964,16F38C,12C9EF,0AD5AC,03F7B0,0AF280,03C4BE,0CAD36,058CDC,07F6BF,0C09D2,00A19B,F6D1F0\n
03,FD1B9C,0FD0A2,037AD4,230C1D,16C255,129F6A,0A04CA,03F648,0AEA78,038230,0CB07E,055042,07BF23,0C0D6C,006EA4,F6D41B\n
04,FD1A6A,0FCF9D,037B43,230CB5,16D642,12A749,09FBA0,03F6AF,0AEA2F,03ACEE,0CB122,057716,07DFF1,0C0CA9,0082FC,F6D6C6\n
05,FD147F,0FCEF7,038499,2308FE,172B50,12EDFE,0B39FA,03F8D7,0AF5BA,042C66,0CAC57,05F074,08410F,0C078E,00D7F9,F6D7C6\n
06,FD172C,0FD064,03820F,2309F2,16FF9D,12D465,0B016B,03F80D,0AF466,03D725,0CAE16,059DEB,08055C,0C0A77,00ADC3,F6D439\n
07,FD1B2C,0FD0B6,037C4B,230CE6,16CAFB,12A81B,0A21A8,03F699,0AED2A,038B78,0CB165,055931,07C7C3,0C0E6D,0077D6,F6D62D\n
08,FD1BD4,0FCFBB,037AA3,230E46,16CAE4,12A01B,  ...

However I would also like to mention that, when I tried to stop and end the session in between the sd card recordings, it never gave the end meta data, it just restarted the another file with the same %STOP keyword in the beginning of the file as before, and nothing else.

Another thing I would like to mention is that I did see the %START and '%Total time mS:', '%min Write time uS:', '%max Write time uS:', '%Over', '%block, uS' keyword when the file was set to be recorded only for 5 minutes, and then only did it show the entire meta data. Why can't the same be achieved if the 24 hr file is not filled and still has the 0 bytes left to be overwrittten?