As you have heard, it applies to them all. Here is a utility I run everytime the app exits so I can verify the file sizes never get too large:

llok=checkfilesize()
IF !llok
	MESSAGEBOX('Your files need to be archived. Please contact Support.',0+48+4096,'Maximum file size exceeded')
ENDIF

FUNCTION checkfilesize
maxsize = 20000000
warnsize= 19998000
lltoobig=.F.
*--Location of tables
ddir="\profiler\data\"
*--Create an array to hold file list
lnfiles=ADIR(filelist,ddir+'*.*')
IF lnfiles>0
	FOR i = 1 TO ALEN(filelist,1)
		IF TYPE('filelist(i,2)')="N" .and. filelist(i,2)>warnsize
			STORE .T. to lltoobig
		ENDIF
	ENDFOR
ELSE
	MESSAGEBOX("No files were found!",16+4096,"Error!")
ENDIF
IF lltoobig
	RETURN .F.
ENDIF
RETURN .T.