As we've been testing CE 6.1 on a test server, we've discovered the following:

1. There’s a bug in the import of assessments from CE 4.1 to 6.1 that adds an extra text string to the path for embedded images in assessment questions (see below). The bug does not exist in the import to CE 6.0.2, only in the import routine for 6.1. A CR has been filed with Blackboard support.
   
   If you look at the "img src=" tag for an embedded image in an Answer or Feedback text field, you'll see a path such as
   
   "/webct/RelativeResourceManager/Template/
   urw/lc5647584011.tp6372184011/
   RelativeResourceManager/Template/
   Math115_Exam1_SP1/test_images/q_1_dis_2_1.png"
   
   The link won't work unless the highlighted portion (in red) is deleted. That's easy to say but hard to do when a typical question may include 4-5 answers (each with an image) and a Question Database of dozens if not hundreds of questions.
   
2. The Assessment export function in CE 6.x was never designed to export images that were embedded using HTML code (the "img src=" tag) from one CE course shell to another, per Blackboard Development. There's a work-around for this. You simply copy the folders with images from the source course shell to the target course shell, while being sure to maintain the same folder structure.
3. When creating assessments in CE 6.x if you attach images in the Question text box (using the Image text box/Browse button combo), those images are exported and imported properly. The images that are not imported are ones that are embedded using the HTML tags placed in the Question text box, the Answer text box or the Feedback text box (obviously when the Use HTML checkbox is selected and HTML codes are used).

If you want more detail, let me know.