What is the version of Dell catalog ?
Do you see software inventory info for the iDRAC 6 device (Manage -> Devices) ? What is the firmware version for iDRAC 6 and BIOS listed ?
I have catalog JN61T/10/18/2012, systems have BIOS 2.0.13 or 1.3.6, or 2.2.10.All systems discovered using ws-man with idrac6, all running 1.92 as idrac firmware. One server has firmware 2.0.13, does show this as software inventory, but doesn't show that the bios could be updated
You can try couple of things:
From Manage -> System Updates, Click Advanced Settings and select Enable Downgrades option. Wait for about 2 minutes and then select "Disable Downgrades" setting. This will update the compliance report.
Can you check if any new components shows up for the devices ?