Strava sync issues vol 2.

Until yesterday Strava sync was disappointing (no way to add HR information from Scanwatch to Strava either directly as a Bluetooth device, or through the HealthMate App, but I could have the whole workout added to Strava, which although would duplicate the workout, at least let me get it visible on Strava somehow.
Now my workout yesterday has not synced at all, and I cannot export and import manually either through GPX, because Strava considers it a duplicate.
I understand that there are fitbit sync issues. I wonder if this is the case with the Strava sync also, and if there is a workaround. 
This would be of significance because I really want someone with Strava to advise me on my workout based on my heart data.