I have a whole bunch of files on the local filesystem, meaning on the same server as nextcloud server is installed. I moved some files to one of the users folders, adjusted file permissions and ownership ( 0755 www-data:www-data) but the user is not able to see those files. Is it just tough luck or is this procedure not supported? If so, how do I get arround 250GB OneDrive For Business Data into one nextcloud account? Thanks
You need to scan the folder if you have moved or copied files into it at the file system level.
Nextcloud need to generate the information about files and directories into the database.