I am using an Edge 530 updated to 6.20. My wife is also using an Edge 530 updated to 6.20.
She had updated her maps to 2020.10, and tried to navigate from this location
37.592884, -121.882257
Navigating to
37.576648, -121.971512
When she attempted this, she was incorrectly navigated 10s of miles out of the way. It appeared the map data was incorrect.
My Edge 530 had older maps (2019.10). When I attempted to navigate, it did so correctly.
When I updated my maps to 2020.10, I too was incorrectly navigated. There appears to be a corruption/error in the map data.
My wife was able to locate a specific map file, upload a new map file, and it worked to correctly navigate. So, we are certain we've identified that the map data is corrupted/errored.
Please provide a fix and advise when available.