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Unfortunately Garmin's API still doesn't support course point types for turns like Left and Right, so we can't send these via the Garmin Sync feature.
Ok, thanks for the info.
I think I remember now what I meant with the dummy course points from Garmin.
I really love the plotaroute feature 'Shift back by X m' that I use to get the course points at the correct time due to my laggy Garmin watch (fenix 5x, 6x and now epix).
When this feature was used, I got both my correct points from plotaroute and often, not always, an extra that Garmin inserted. And of course no symbols. Really basic Garmin feature...
But I understand that there could be useful usecases if turn directions from plotaroute not are the the main focus.