Hi,
When you add an upload and resize behaviour to a form it creates a number of bindings for the file upload.
If you use the resize feature of the upload behaviour then it creates additional bindings for the newly created file.
What you need to do is have a field in your database table that stores the filename of the resized file and when using the insert behaviour select the "ServerFileName" binding for the resized file.
Hope that helps?
Cheers
Ian