That makes sense and the limit is not in our program. The issue is this when you submit an image we check to see if there are multiple images to process or if the category your uploading to has extra info you have to fill out. If that happens your forwarded to another script called bulkupload.php
The issue is the limitation is from your server. There is a uri limitation on the amount of data one can send and that is where your data is cut down.
You can have your host look at the server apache setup restrictions see if they can raise any limit on the amount of data there is. Sending stuff to bulkupload requires a get not post command.
Now the user also can reenter the description on bulkupload after it is send. That should work as well. He just has to double check it when he uploads.