No, any changes made to the group trip itinerary after sub-trips are created will not reflect on the sub-trips.
New sub-trips created will use the existing group itinerary settings at the time of their creation.
FAQ If I edit a Group Trip itinerary after sub trips are created will those changes propagate to the sub trips?
Editing group trips after sub trips are created

Written by Jade Pathe
Updated over 4 months ago