FCK 2.6 changes embed tag

Hi,

FCK 2.6 is changing my <embed> tags so it won't work anymore.

I searched the forum but couldn't find any help.
I installed 2.6 freshly after having the same problems with 2.4.3.

When I use this flash embed tag:

<p><embed type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" src="/shop/images/video/flvplayer.swf?autoStart=0&file=http://www.domain.com/shop/images/video/this-is-a-file-name.flv" play="true" loop="false" menu="false" height="256" width="420"></embed></p>

FCK will change the code to this upon the next edit, eleminating the source and surely the video won't play anymore.

<p>&nbsp;</p>
<embed width="420" height="256" menu="false" loop="false" play="true" src="about:blank" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash"></embed>
<p>&nbsp;</p>

I am irritated about the new <p> tagging although I changed the enter mode to <br>.
I also tried to set up with the "insert flash" button with same effects so FCK seems to have problems with my "src" property.

At the moment I have to change my database entrys directly preventing FCK to change my code.

THIS IS NOT how I can work