Regarding (2), you are right...but I've found a better way to clear the cache is to put a different, small jumpdrive with a few songs into the USB port. The new device ID (I assume) forces a rescan, and the previous cache is lost. Then plug your original storage device in, and it will rescan.
Beats trying to think up new ways to automatically rename files, which is a pain and I've found (in more recent versions) is less reliable for triggering a rescan.
Unfortunately I can say that based on a trial of one with version 6.2 on my P85D tonight, the "better way" on longer seems to work, while the way described in Majorlance's 2) above did.
I edited a track that was not being recognized properly. Tried Todd's method of swapping smaller drive several times, without success. I even went so far as to try to force the system to recognize the older, larger drive as USB 2 by leaving the smaller drive in place (after it didn't work the first couple of times), and that did not work. Removing the smaller drive at that point left the system recognizing the larger drive as USB2, even though it was the only drive in place. I then tried swapping it back into the other slot, but still without luck. Basically no combination of switching the small drive and the large drive had any effect whatsoever. I could not get the system to use the new tag data.
I then brought the drive in to my computer, changed the folder name very slightly, and the change was immediately picked up by the system when the drive was reinserted.
I realize this is just one data point, so others feel free to jump in and add your current observations as to how this is working.
Also, on a related note, I read what you wrote in another thread, Todd, about having Tesla engineering delete (or erase) the meta data cache. I actually called in on Saturday to attempt to have that done and the rep that answered the phone had no idea what I was talking about. Initially he told me I could do it myself by simply rebooting the 17" display. I told him that was incorrect, and that if he could not do it that it was something that engineering would have to do. He said he would open a case, but I have not heard back. When you had this done, was it something handled immediately, on your initial call, by the person who took the call? If not, what was the process?
Thanks.