The devices should show up correctly in the list provided that their entries have been modified in DCR, and you did not just add the correct information as a new device.
However, the message (i.e. the reason for the failure) is statically coded in the database so you may see things like:
TELNET: Failed to establish TELNET connection to device.domain.com - Cause: Authentication failed on device 3 times. PRIMARY-RUNNING config Fetch Operation failed for TFTP.
This is purely aesthetic, and may not reflect what DCR thinks about this device's identity.
To remove a device from the archive Failed list, you must ensure that ALL of its supported configs have been successfully fetched. The best way to do this is schedule a Sync Archive job for the device, and click the "Fetch Startup Config" checkbox. Assuming all credentials are correct, RME should update all of the configs, and move the device to the Successful list.
If at least one config is successfully fetched, and at least one config fails, then the device will be listed under the Partially Successful category.