On MacOS 10.15.5, "About This Mac --> Storage" is not recognizing my RAID-1 drive correctly

I upgraded from *El Capitan* to *Catalina* **10.15.5** on a *MacbookPro mid-2012* , the oldest HW that Catalina will run on. Then, I created a RAID-1 drive using 2 USB disks. "*About This Mac* --> *Storage*" is **not** showing a logical 500-gb RAID-1 drive, the 500-gb disk RAID member, and the 500-gb partition RAID member is not displayed, but the 1-tb disk for this partition, and the other 500-gb partition on the same disk, **is** displayed. On the other hand: (1) "*Go -> Utility -> Disk Utility* ", (2) "*Finder*", and (3) command-line utilities all show the correct drive structure: the logical RAID-1 drive, the 2 physical disks, the 2 partitions of the 1-tb disk. Further, the amount of available drive space, on all disks, all agree. note: I did a major reorg of my data when I upgraded to Catalina. My internal disk is SSD, and Catalina automatically formatted it to APFS. Next, I emptied the 500-gb and 1-tb disks into a 2-tb disk. I decided to re-format both (hfs+). Using Catalina's RAID tool, I created the RAID-1 drive. Everything, except "*About This Mac* --> *Storage*", looks great so I am proceeding. So, I'm just reporting this and thinking this has something to do with a mid-2012 MacBook Pro being the oldest HW to support Catalina. Since data is critical to me these days, please tell me if I should be concerned about the strange "*About This Mac --> Storage*" result.