Importing and Exporting of CRM Reports

I have created a new Report in Report Builder and Imported it into a CRM Org. I have further modified the report directly through report builder and can see the changes when I run the Report in CRM. I needed to take the report from Org 1 and Import it into Org 2 but when I now run the report from Org 2 the format is of the original copy that I imported into Org 1 prior to the direct updated via report builder. Basically what I see in Org 1 when I run the report is not what is exported (keeps reverting back to the original) why is this so?