Avi files missing from view in Organizer

Question

I recently installed Premiere Elements 8 and Photoshop Elements 8.  I captured 1 hour of video from my DV camcorder  The capture resulted in 43 avi files being transferred to my Vista PC.  The files all show up fine in the Premiere Elements editor project view and timeline.  But only 23 of the videos show up in Elements Organizer.  I have tried reimporting all the files to Organizer, but Organizer says they already exist.  I have selected to show all files, but no luck.
I looked at another folder where I had captured 18 avi files with the trial version of Pre8, and Organizer only shows me 10 of the files.
I've tried everything I can think of to make sure I'm not filtering these files from view.
What am I missing?

Answer 1

The files are all in the same folder on the second of two internal 500 GB hard drives.  They are all together in the same folder, labeled as "My Project 01.avi" up to "My Project 43.avi"
I figured out a way to see the missing files in Organizer by selecting the "thumbnail" view instead of the "batch" or "folder" view.  What I discovered is that all the files that have been "missing" appear as stacks of files, but I can't see an option to unstack them like you can do with photos in Photoshop elements.
For example, I have a file that I couldn't see in Organizer called "My Project 11.avi".  When I look at this file in the Premier Elements 8, under the project view, it shows as a movie with duration of 2:59:22.  But when I look at it in thumbnail view in Organizer, it shows a stack of files.  When you expand the stack, you see three files, each labeled with the same filename, "My Project 11.avi"   The files are 1:21, 0:08, and 1:31 in length, i.e the same total time.  Collectively, they make up the same clip as I see in PE8.  When you pick batch or folder view, the clip disappears for the Organizer view.  The same exact scenario holds for 20 of the other clips in my folder.
I'm really confused by this....I don't want to have to hunt down clips so I can tag them.  And I don't understand why the clip is split up and stacked.  When I captured the video, I opted to split scenes by timecode, but these are continuous clips shot without interruption.  I did not select auto-analyzer.
So why would these clips appear as stacks?  It doesn't look to me like the user can even select to stack videos. 
And either way, why would Organizer only show them when thumbnail view is selected?
thanks