Hello Tarciso, from what I can see here, this isn't an Excel issue. This is probably the way your inventory control system exports data. Aside from splitting the data into two sheets, I can also see that the table header spellings are a bit different and there's an additional "Price" column. Excel won't make all these changes to your file. Please check the inventory software settings to see if there's a way to export it all as one sheet.
Another option is to merge both sheets into one, eliminating the repeated columns. You can learn about combining Excel sheets here: https://support.microsoft.com/office/dd7c7a2a-4648-4dbe-9a11-eedeba1546b4.
- Stephen N.