Windows VBScript删除行

我有一个VBScript，它将cfg文件中的一个时区替换为另一个时区，该文件每6小时运行一次。除了一个问题外，替换工作非常好，每次运行脚本时，VBScript都会删除顶行。cfg文件如下所示：

//
// config.cfg
//
// comments are written with "//" in front of them.


// GLOBAL SETTINGS
hostname = "Blablabla (v1.7.6.1/Build 103718) [REGULAR|3DP:ON|CH:ON][UTC-2] - SomeMoreCharactersAndText

VBScript会将UTC-2更改为其他可以正常工作的值，尽管每次运行时，VBScript都会删除顶行，因此在运行3次后看起来是这样的：

// comments are written with "//" in front of them.
// GLOBAL SETTINGS
hostname = "Blablabla (v1.7.6.1/Build 103718) [REGULAR|3DP:ON|CH:ON][UTC-2] - SomeMoreCharactersAndText

运行六次后，它将删除主机名行本身。我想知道VBScript代码是否有问题？ 我从批处理文件执行VBScript，批处理文件如下所示：

@echo off
echo Setting Current Timezone...
cd "C:\Program Files (x86)\Steam\SteamApps\common\Arma 2 CO\dayz_1.chernarus"
rename config_XXXXXX.cfg config_XXXXXX_old.cfg
cscript /nologo myreplace.vbs  > newfile
ren newfile config_XXXXXX.cfg
del config_XXXXXX_old.cfg

这就是VBScript本身：

Set objFS = CreateObject("Scripting.FileSystemObject")
strFile = "C:\Program Files (x86)\Steam\SteamApps\common\Arma 2 CO\dayz_1.chernarus\config_XXXXXX_old.cfg"
Set objFile = objFS.OpenTextFile(strFile)
strLine = objFile.ReadLine
Do Until objFile.AtEndOfStream
    strLine = objFile.ReadLine
    If InStr(strLine,"UTC-8")> 0 Then
        strLine = Replace(strLine,"UTC-8","UTC+10")
    ElseIf InStr(strLine,"UTC+10")> 0 Then
        strLine = Replace(strLine,"UTC+10","UTC+4")
    ElseIf InStr(strLine,"UTC+4")> 0 Then
        strLine = Replace(strLine,"UTC+4","UTC-2")
    ElseIf InStr(strLine,"UTC-2")> 0 Then
        strLine = Replace(strLine,"UTC-2","UTC-8")
    End If
    WScript.Echo strLine
Loop
objFile.Close

---

提前谢谢！你好，汤姆。

脚本IO部分的结构：

strLine = objFile.ReadLine  (a)
Do Until objFile.AtEndOfStream
    strLine = objFile.ReadLine (b)
    ...
    WScript.Echo strLine (c)
Loop

显示第一行（a）没有回声，而下面的所有行（b）都没有回声

尝试：

strLine = objFile.ReadLine  (a)
WScript.Echo strLine (c)
Do Until objFile.AtEndOfStream
    strLine = objFile.ReadLine (b)
    ...
    WScript.Echo strLine (c)
Loop