Are users allowed to copy and edit an existing standard report to the Report Writer tool?

Are users allowed to copy and edit an existing standard report to the Report Writer tool?

No. They are two different reporting tools. The report writing team in the Development department will slowly start releasing new CANNED (Standard) reports with DevExpress. Once the CANNED reports are converted to DevExpress, users will then be able to edit these reports. 

Note! The old reports will still be available within the system.