The GUID within the Job is a nightmare, use the following query to find the guid for a SQL Server Reporting Server Report Subscription .
FROM ReportServer.dbo.ReportSchedule a
join ReportServer.dbo.Catalog c on c.ItemID = a.ReportID
where c.name = 'Report Name'
Of course there's always the option to open up these jobs copy the SQL and create your own scheduled task for running the Subscription.