Correcting Application Entries

Hi there! Due to wrong setup, some Item Ledger Entries (about 200) were applicated wrong. That means: Navision applicated everything correctly but not the serial nos. This means: There is 1 purchase of 100 items each posted with serial nos. and 10 sales with 2 of those items on it. Every Item Ledger Entry was posted correctly, except that the sale of serial no. 1234 is not neccessarily applicated to the purchase of serial no. 1234 but maybe to the pruchase of serial no. 5678. My question: What can I do about that? Can i manually change the Application Entries and the Remaining Quantity and the Open-Flag? Thanks for any idea.