Simple... Follow the steps to get a list of the ignored subnets:
1. Go to Reporting->Queries
2. Click New Query
3. Select Detected Subnets and click Next
4. Select Table and click Next
5. Select Ignored (for columns) and click Next
6. Select Ignored (for filter), Equals, True and click Run
If you want to include the ignored subnet, select from the output and click 'include'
Thanks! I thought there had to be a way to do it but I couldn't find one. My fears of someone ignoring a subnet that I don't want ignored are mostly gone now! Thanks again.