When you copy a report template to the Global.mpt file, this makes that report template available in every current and future project you manage. There is rarely a need to copy any element, such as views or tables, FROM the Global.mpt into a project. So, even though you deleted the report from the project, its template is still available to that project since it is in the Global.mpt file.

Understood. Thank you.

How do you handle version management of reports? I use reports and I improve them from time to time. How can I manage different versions or do you always overwrite them?

Thank you.