Hmmmmmmmm... I think it will just call those 'Invalid Records' and move on to the ones it likes. However, I'm not 100% sure because I used my own export for coding this and I do not log my drops.
It first checks the XML file to make sure it is not malformed or incomplete, then it checks the schema versus an XSD file. That is the part I'm not sure about...
I do not know if claimless drops change the schema, although I doubt it. And once it gets past the file check and schema check, it processes one record at a time. So as long as the file is well formed and the schema is the same, you should be in business.
Give it a shot. If you have any problems, let me know and I'll try to fix it up for you.
