Many thanks for viewing the thread 1st of all. Hopefully, I am posting at the right place.
Situation:
I have posted my application at the 5th March 2010; for Tier 1 General extension converting from HSMP. My current HSMP status expires at 13th March 2010. I received my application back at 1 April 2010; UKBA said my application is invalid as I didn't make the correct payment for this particular application (Should be 800, but I paid 400


Question:
1, As my HSMP Visa has been expired, is there any chance that I can make a brand new application rely on above situation?
2, if the answer is yes, do I need to pay another 800 pounds in full rather than a top up 400 pounds?
Thanks so much in advanced. I do really appreciate your kindly replies.

Best Regards,