使用批處理替換功能替換出來的內容為何消失了

del 1.txt
for /f tokens=1,2,3,4,5,6 delims=: %%i in ('wmic nic where netconnectionid='本地連接 2' get macaddress') do set q=%%i-%%j-%%k-%%l-%%m-%%n
set /s aa=%q%
pause
for /f delims= %%a in (ptc_licfile.dat) do (
set str=%%a
setlocal enabledelayedexpansion
set str=!str:00-23-8B-BF-5F-E8=%aa%!
echo,!str:*:=!
endlocal
)>>1.txt
nclick="copycode($('code0'));">復制代碼

ptc_licfile.dat 內容：INCREMENT MECBASICUI_12345 ptc_d 29.0 permanent uncountedVENDOR_STRING=VSVER=2.0 LO=(19,157,211) SUPERSEDE HOSTID=PTC_HOSTID=00-23-8B-BF-5F-E8 vendor_info=VIVER=2.0 EXTERNAL_NAME= ISSUER=ODT ISSUED=2-apr-2006 NOTICE=PTC SN=07071982 SIGN=092F DBD8 F7BA EC9D 51E5 453C 93A1 D63D 0BC7 3126 8493 2C23 32A9 A98F 8BC0 1BEB 0F0F 5C63 6933 5B61 613F 0CFB 235B 9C1B B39E 274F 2E5A 60E1 1FEF DE6A SIGN2=092F DBD8 F7BA EC9D 51E5 453C 93A1 D63D 0BC7 3126 8493 2C23 32A9 A98F 8BC0 1BEB 0F0F 5C63 6933 5B61 613F 0CFB 235B 9C1B B39E 274F 2E5A 60E1 1FEF DE6A為什么替換了就沒了？