GPX import and editing

I have a 250km gpx route I'd like to ride but I can't find any way of importing the route into TTA. I have imported it via the Tacx Cloud but there appears to be no way to edit or create sub-routes. Is this feature available or is it again only a TDA feature? I do have a PC I can do the work on but not everyone will have access to multiple machines so as TTA is far less powerful or versatile than TDA are there any plans to reduce the subscription fee for TTA users as they are obviously getting a substandard product compared to TDA?