Preventing MID Conversion to Scientific Notation in Excel
The following steps explain how to prevent MID values from being automatically converted to scientific notation in Excel on macOS and Windows:
1. Preventing MID conversion on macOS (OSX)
      - Open a new Excel workbook
      - Go to the 
Data menu and select 
Get External Data > choose the MID file

      - In the Text Import Wizard:
            - Choose 
Delimited > click 
Next

            - Select 
Comma as the delimiter > click 
Next

            - Select the column containing the MIDs
            - Change the column data format to 
Text
      - Click 
Finish to complete the process

This approach ensures Excel does not convert the MID values into scientific notation or truncate any digits.
2. Preventing MID conversion on Windows
      - In Excel, select the column containing the MID, then right-click the mouse and choose Format Cells    
      - In Category section, select Number, set Decimal places to 0, then click OK