Thank you for the small update.
I applied the update on our Version V6up75.xxxx.5377 . u00832 downgrades smbd version 3.5.4 down to smbd version 3.2.15 .
I have done some testing and can say that this does not fix my problem.
By default i will now have the user guest and nobody in the user list. Without the update 0832 there was only the user guest viewable. If i want to import a CSV i will get the error as described in the original post.
But it is possible to get the list of users as wanted as long as the number of users generated by the GUI matches the same usernames and the same amount of users.
If i will create 5 users and export them as CSV, i will get a file in which i can edit the
UIDs. After importing this modified file the UIDs will be set as expected.
Any attempt to extend this list or modifications on only one username will result in an error on importing the CSV.
At the moment we cannot import our userbase because the import will not overwrite the user or group information as described in the documentation.