Why do some of my files have a prefix or an underscore as a name?

If a file name exactly matches a reserved Windows name (such as CON, PRN, AUX, NUL, COM1-COM9, or LPT1-LPT9), Procore adds a prefix to it to ensure it functions safely. Additionally, if the file name sanitization process removes all characters and results in an empty name, the file will automatically be named "_".