Little tip: Find the report in the old parameter transaction. Us eth Se38 where-used-list to search for the new transaction. Start it and in the selection screen us the help -> application help to get the URL.
Takes about 15 mins to relace them :-)
Also see SAP notes 1897781 and 1930238 which changed the screens and parameter transactions and APIs. This means that the application helps changed and you should change the transaction codes as well as the screens won't work anymore.
Cheers,
Julius