which result do you want to achieve or do you expect?
Based on this you have to configure the mapping within the import process AND prepare the source.
Do you plan to use separated steps?
Right now I think you have used the field Steps, which is a big text field without any given structure.
Using csv, separated steps have to available as separated rows.
Your steps contain XML (?) structure info, which is imported as well. The csv importer will use it as text content and place it in the field. If you plan to get rid of it, you have to remove it in before. TestRail won’t help you - at least I’m not aware of a feature for it.
So, back to my first question…