FCK is reformatting code

Can anyone shed some light on why FCK transposes code pasted into source mode? FCK is reformatting and truncating my code when pasting in.

Thanks for any insight.

Here's the original first few lines:

<table width="865" border="0" cellpadding="1" cellspacing="1" style="margin: 0 auto;">
<tr>
<td width="221" class="headerrow" style="background-color: #6a8c02;
   font-family: Tahoma;
   font-size: small;
   color: #FFFFFF;
   text-align: center;">
            <strong>TEST</strong>
</td>

Here are the same lines after pasting and saving:

<table width="865" cellspacing="1" cellpadding="1" border="0" style="margin: 0pt auto;">
    <tbody>
        <tr>
            <td width="221" style="background-color: rgb(106, 140, 2); font-family: Tahoma; font-size: small; color: rgb(255, 255, 255); text-align: center;" class="headerrow"><strong>TEST</strong></td>