Chennai team who transferred the FRO to Charlotte would be able to trace the history in the case that the FRO mistakenly makes it back to their queue/ visibility (if the internal note is mistakenly updated without including the word "transfer"). Additionally, there is potential for the Charlotte dispatch team to leave notes that are helpful to other dispatchers working the same area in the case the dispatcher is out.
There is a notes feature in SAP TM at the FRO link level. See attached pdf for screenshots and let us know if you would like more information (via meeting screenshare). Thanks.