The window "import/export points" I would add a checkbox "zoom extension" and preview the file for selected the correct format. (With Civil 3D 2012 there is a preview once you've chosen the correct format but I would like open the file once I have chosen the path).
Autocad C3D 2019 SP3, 2020 & 2021
Intel I9 9900K with frontal watercooler alphacool eisbaer 360 (original fans mounted in pull)- 3 fans Corsair 120 ML PRO in push.
MOBO Gygabyte Z390 Aorus Master- Corsair RGB Vengeance 64GB RAM (4x16) CL16
Nvidia Quadro RTX 4000
Samsung 970 EVO PLUS 1TB (unit C). Samsung 970 PRO 512GB (for data)
Power Supply: Corsair TX850M PLUS
Descubre mi programa VisorNET para Civil 3D:
https://apps.autodesk.com/CIV3D/es/Detail/Index?id=appstore.exchange.autodesk.com%3avisornet_windows32and64%3aes