Description of problem:
Checkbox selection in "available device" section is reset when editing partition for second time. This may result in moving partition from one disk to another.

For example, create following scheme:
Two disks by 8G - first: 1 partition of 200M, 2nd part. of 7G, second disk is empty.
Editing 7G partition and clicking ok result in moving it from first disk to second.

Version-Release number of selected component (if applicable):
anaconda 12.33 from raid test day