Two questions
 

1. Do sparse images get crufty?

Is there a limit on how many times I should update a sparse image using Smart Update? Should I periodically delete it and start with a fresh one?

2. How can you tell which settings document the scheduled backup uses?

I run a backup. I click File->Save As... and save my settings. I set up some different settings (different destination/volume etc.) and save those settings. How do I explicitly associate a given settings collection with a given scheduled backup event? For that matter, how can I even tell which settings the scheduled backup is using?

Thanks!

Crufty? Not any more than a drive gets crufty, really. They can get large, though, and need compacting -- you can do that by running the Terminal command:

to make that easier, type "hdiutil compact ", including the space but not the quotes, in Terminal, then drag the sparse image file into Terminal It'll type the-image-path for you, and you can just press Return.

Each scheduled backup uses a settings document whose name is the same as the name of the schedule. You'll find them in the "Scheduled Copies" folder in Library/Application Support/SuperDuper! off your Home.

If you based the schedule on some existing settings, those settings are *copied* to a new scheduled copy -- the settings are not shared.