In some cases when video is split in parts, it takes some time until additional parts are imported. Only part 1 gets imported right away, while you have to wait a bit for other parts. Can you check that imported video again now and let me know if additional parts were imported after all?
Thanks for the answer.
I have just checked, but unfortunately there are still no additional parts. I also looked at another video where I had the same problem, and it’s the same. The other parts are not imported.