Views:

Behavior:
When exporting a file using the Export tool and opening it in Notepad, the characters ï»¿ are shown on the first line. 

Answer:
The "" characters that appear in Notepad are called Byte Order Mark (BOM). These characters are added because the file was exported using the UTF8 encoding type.

To prevent this from reoccurring, the best practice is to use either the ANSI or ASCII encoding types when exporting your data. Please reference KBA-36905 on how to change the encoding level for the Export Tool

KBA is applicable for both Cloud and On-premise Organizations.