I've just created a new report template, but when I go back into BIDS to view the report list, the new report does not show up for some reason.
However, you can see that the .rdl file exists on the server when browsing locally.
In BIDS, open the HEAT Reports project.
In the Solution Explorer window, right click on the Reports folder, then select Add -> Existing Item from the context menu.
You should then be able to browse to the new report and select it, and it will subsequently show up at the end of the list of Reports.