How to overwrite a report in SAP BI 4.1

Good Day,

I'm trying to replace an old report from SAP BI server (without re-scheduling), but when I try to do it through Crystal Report (Desktop, v11) show me the error "Another Crystal Reports document with the same name exist in this folder", so I can't.

I can't recreate the schedules because there are a lot, so, was figuring out if I can do this through the SDK, I know programming but I'm really new on SAP BI SDK, only want to know which methods should I use and things like that, if you have a sample code that would be awesome!.

Thanks in advance for any help.