I have already checked previous posts concerning this issue, but no success.
I faced it several days ago on Win 10 1903 and XD 188.8.131.52. Both (parent and working) files in Cloud. I have already tried to sign out and add the whole parent file as a link asset but in vain. For a new separate file, everything works properly: - I can add components from a parent one and update them; - I can create components, add them to the working file and update as well.
What can be wrong with the connection between parent and working files?