when i originally bought this software the disc were defective and would not load so i was given a link to download the software, i just recently had to purchase a new computer so i went to download software and got a different version.. i added my inventory which i had backed up. now when i add inventory when it sells it goes from quantity 1 to -1, i am checking in merchandise the same as before created a po and then receiving, if i go to check if i have an item on hand it says i have 1 but when i sell it show up on the negetive on hand page. please help asap before my entire inventory is screwed up. thanks xt