Most all of Icom's software leaves a lot to be desired. I can't understand it either. They make great radios, and who better than them should be able to write software that best supports, and exploits all the features of their radios? They fail miserably. Icom was still supplying DOS based software when most of us were running Windows 98, or Windows 2000.
To make matters worse, they're stingy with the required details that would allow others to write software.