SYMPTOM:
Whenever an already existing report is altered and then a save attempt is made the user receives the error below:

"An object with name 'xxx' and type 'Report Definition' already exists in the destination folder"
CAUSE:
This occurred because the report name contained an em dash "–" such as a report entitled "Em Dash – Report". Strategy does not consistently handle this character and so it is advised to not use it in the name of objects.
ACTION:
Rename the report to not include an em dash "–". Regular short dashes do not encounter this problem so renaming the report from "Em Dash – Report" to "Em Dash - Report" will resolve the saving error encountered.
WORKAROUND:
If the em dash is required for some business case the users can "Save As" into a different folder successfully. They will then be able to "Save As" again back into the desired folder successfully.