Seller performance not correct in December

[yellowbird.617]

My seller performance for December indicates 2 orders not uploaded on time. When I click on the report it indicates 2 orders not uploaded at all. When I look at the monthly breakdown to see what 2 orders it reads Good Job. All orders uploaded on time. All my December orders were shipped in 1 business day. All I can think of is that 2 orders were sold on December 31 and shipped on January 2 which is the next business day. Thinking there is a glitch were items sold on December 31 did not carry over to the new year. Before I contact Ebay, wanted to see if anyone else has this issue. Thanks.