I’m sorry because I really can’t remember what you are referring to by Courses2.txt. I know I’ve prepared it to help a user but I don’t remember what it was. When you are asking a question about a non-default configuration it will be better to add a reference (link) to the related topic so we can easily find it.
You can read Useful Tips section of Community Guidelines document for more useful information.
When you rename something you should also rename all references that possibly exists inside automation configuration. Please check related rules and actions for all references to Desert course and also rename them to Dessert.
Adding a new course name also might not be enough to make it work properly. You should check your automation configuration and make required changes inside related rules and actions to handle Side course.
Having a better understanding about how these rules and actions work is really needed to be able to customize / fine tune tutorials for your needs. You’ll probably continue optimizing that configuration as your business needs changes.
Sequence contains no element error does not happen because you selected all items. It relates with a single misconfigured element you normally you don’t select. It is too hard to know which one it is as all items are selected so to narrow it down please uncheck groups one by one until error message disappears. When you locate the group please uncheck sub items one by one to find which item leads to that error message. By finding it you’ll also find the reason of this error after checking it’s configuration but if you can’t find it please let us know your findings.
Also keep in mind export feature did not designed to export / import whole database. You can use backup / restore feature for that. Export / import feature is mostly used for exporting / merging part of your configuration to another database.