Weird things happened after I did the ReagentC.
It pointed to the new Recovery partition OK. But when I booted to it (Shift+Restart), it wasn't fully functioning. Not all the screens were there. In fact, hardly any were there beyond "Choose an Option". I rebooted to Windows OK, & a second try at Shift+Restart did have all the screens which seemed to work fine.
I thought that meant I had missed a reboot somewhere. Maybe one was required after that partition work in DiskPart that deleted & recreated the partition even though its number remained 4. Maybe one (to Windows) was required after I did the ReagentC before doing Shift+Restart.
So, I tried to do another ReagentC to point back to the original Recovery partition (partition 5 for me). I was going to do it, then immediately Shift+Restart. I thought that might determine which reboot was necessary that I had missed. But it didn't work: "REAGENTC.EXE: The specified path was not found.". The Recovery folder is there, but not much beyond it. It looks just like one that Windows leaves behind after an upgrade causes a new one to be created. (But your old ones don't look like that.) And my Xcopy didn't do that.
So, it looks like Windows for some reason pulled the files out of my partition 5 & put them into partition 4 (my new Recovery partition) after I had already done it. It has a Recycle Bin in it containing the ones I had Xcopied to it...
[Edit: Nah, clearly the Recycle Bin doesn't have recovery files inside. It's just a folder named after a GUID with a Desktop.ini inside. But I'm still thinking my set of Xcopied recovery files were possibly overwriten with a new set of them.]
C:\WINDOWS\system32>dir x:\ /a /s
Volume in drive X is Recovery Tools
Volume Serial Number is 707D-DB0A
Directory of x:\
07/24/2020 03:55 AM <DIR> $RECYCLE.BIN
07/24/2020 12:00 AM <DIR> Recovery
07/24/2020 04:27 AM <DIR> System Volume Information
0 File(s) 0 bytes
Directory of x:$RECYCLE.BIN
07/24/2020 03:55 AM <DIR> .
07/24/2020 03:55 AM <DIR> ..
07/24/2020 03:55 AM <DIR> S-1-5-21-191566122-1535656984-3147892972-1001
0 File(s) 0 bytes
Directory of x:$RECYCLE.BIN\S-1-5-21-191566122-1535656984-3147892972-1001
07/24/2020 03:55 AM <DIR> .
07/24/2020 03:55 AM <DIR> ..
07/24/2020 03:55 AM 129 desktop.ini
1 File(s) 129 bytes
Directory of x:\Recovery
07/24/2020 12:00 AM <DIR> .
07/24/2020 12:00 AM <DIR> ..
07/24/2020 04:17 AM <DIR> Logs
07/24/2020 04:50 AM <DIR> WindowsRE
0 File(s) 0 bytes
Directory of x:\Recovery\Logs
07/24/2020 04:17 AM <DIR> .
07/24/2020 04:17 AM <DIR> ..
07/24/2020 08:07 AM 1,384 Reload.xml
1 File(s) 1,384 bytes
Directory of x:\Recovery\WindowsRE
07/24/2020 04:50 AM <DIR> .
07/24/2020 04:50 AM <DIR> ..
12/07/2019 05:08 AM 3,170,304 boot.sdi
07/24/2020 04:50 AM 1,139 ReAgent.xml
07/09/2020 11:23 PM 525,321,603 Winre.wim
3 File(s) 528,493,046 bytes
Total Files Listed:
5 File(s) 528,494,559 bytes
16 Dir(s) 321,179,648 bytes free
It didn't have that Recycle Bin until after I did the ReagentC & Shift+Restart. It works, but I guess you won't want your partition 6 to loose its Recovery files. Here is what my basically empty original Recovery partition looks like now...
Directory of R:\
07/24/2020 03:34 AM <DIR> Recovery
07/15/2020 06:24 PM <DIR> System Volume Information
0 File(s) 0 bytes
Directory of R:\Recovery
07/24/2020 03:34 AM <DIR> .
07/24/2020 03:34 AM <DIR> ..
06/28/2020 10:51 PM <DIR> Logs
0 File(s) 0 bytes
Directory of R:\Recovery\Logs
06/28/2020 10:51 PM <DIR> .
06/28/2020 10:51 PM <DIR> ..
06/29/2020 02:30 AM 1,356 Reload.xml
1 File(s) 1,356 bytes
But I'll show you how to do the ReagentC, if you want. If you won't do it, there's no sense in deleting & recreating your partition 5 either.