IE8 Problem copy or cut and paste numeroted list with linebreak

[jtonnelier]

In IE8:

1.Create a numeroted list

2.Use Shift+Enter for a line break (adding Br tag)

3.Copy or cut the list

4.Paste the list

Problem: the line break is missing

Detect in 4.4.1, but present here: ​http://ckeditor.com/demo

[Jakub Ś]

Problem can be reproduced from CKEditor 4.0 in IE8-10. In all other borwsers, br tags are not removed.

NOTE: Before version 4.0, list after pasting looked like:

<ul>
	<li>
		<ul>
			<li>
				test1</li>
			<li>
				test2</li>
			<li>
				test3</li>
		</ul>
	</li>
	<li>
		~</li>
	<li>
		&nbsp;</li>
</ul>