Support Assist Collection - how to clear OS and Application Data

I currently have about 20 R640s that I am repurposing and one of them seems to be holding onto OS and application data somewhere on the system. I've done a full repurpose, drained flea power, cleared the NVRAM, and a few systemerase commands via RACADM but when I pull a support assist collection via iDRAC, the job queue shows it completed with errors but I'm not seeing any errors in the collection.

My question is how to I clear that data the system seems to be holding onto? I've worked on Poweredges for years repurposing and updating systems but haven't came across this.

No drives or OS is installed.

All firmware is updated.

There must be a way to clear the cached OS and application data. Any help is appreciated.