I recorded a few activities using my Edge 1030 and they are getting synced properly to GCM. However, the training data gets displayed in a weird way. I followed the Training using my indoor trainer. The white line represents how the training was planned, the purple line is the actual power output.
GCM squeezes the planned training in about 1/3rd of the display, but it actually was done in one and a half hour according to my edge.
I think this is a bug in GCM 4.27.1 since the display was correct in GCM 4.22.1. If I view older activities with the new GCM app version, the data is also messed up.
Garmin, please fix this!