It is a workflow killer to switch from regular mode to storage mode to load samples into the M+, so I figured I could just add samples to a USB stick and copy them over by using that and not switching modes.
The M+ recognizes the USB stick, I was able to load samples, and then I saved a group and program which used these, hoping that would copy the samples onto the SD card. But there is no "save with samples" option like there is in the software.
I did a restart and loaded my program and it can't find the samples. Not a huge deal, but when I go to look for one shots, the USB stick still shows up with it's list of samples even though it is not connected. It thinks I wanted to use this as permanent storage (Which is what the SD card is for) - totally an unexpected limitation of this device.
But now, how do I tell M+ that this USB stick no longer exists? I don't want those samples in my list of one-shots when they are un-loadable.