Import files (GPX, TCX) without GPS data
I want to transfer all my data from Runtastic to Strava. It is possible to export all Runtastic data as JSON. I wrote a script which converts all my activities to TCX files. Which works quite fine. but there are activities without any GPS data and obviously I want to import that activity as well. but if I upload an TCX without any GPS data I get an error.
Is there a way to upload files without gps. If not, why not. I mean it's possible to create manuell actives without gps in strave. is there a workout with some fake gps data or something?
I would appreciate some help. this is the last step I need for my migration which would be quite awesome.