No, this doesn't need to be added to the readme because it's not how it works.
If you want to use ioA rescan/rescanall, don't use ioBanana rescan.
For ioBanana, SITE RESCAN rescans the whole dir and SITE RESCAN <file> rescans the specified file and displays current valid/bad files WITHOUT doing any crc-check on them if they were good. Your precious cpu cycles are safe
