just noticed, after i farmed a bunch of herbs in twilight highlands yesterday and found many new nodes that were not on the map at the time. After loggin back in today to do some more farming those nodes that i found yesterday are no longer on the map.
I know at some point yesterday my pc had crashed, and i had thought that it was after i had logged out to a different toon.
As my herb node count today started at 98, i did 3 laps and ended at 128. Then i exited wow completly and relogged, then routed the zone and it came back up to 128.