According to the existing workflow, I believe that trimming of the existing routes at the start/end part is still unavoidable, especially when the location does not have GCP nearby.
We can use the original data as it is, but you will see there will be areas of route overlapping which is unnecessary. It is not our client’s expectation.
I think it is the drawback of ‘upfront survey’ which is the mutually agreed way for this project.
For M6 and later on, we can analysis the video data before sending to you but we need to see the GCP first. Then you may not be able to have the video for preparing zic once shot.
Anyway, we need to discuss it in details when you are here in HK.