Star Types Not Updating

I've had a long-term personal project to visit all White Dwarf "D" stars in order to correct their classification in EDSM (and elsewhere) from "D" to whatever it really is "DA/DB/DC/etc". I use EDMC to send data to EDDN, EDSM and Inara.

I last visited a White Dwarf system a few weeks ago and everything was working fine. Last night I visited a new system where the star is a "DC" White Dwarf, but EDSM isn't updating. The star in question is: Stuelou WF-O d6-279 A

The relevant entries from the game journal files are:

{ "timestamp":"2021-06-20T02:34:20Z", "event":"FSDTarget", "Name":"Stuelou WF-O d6-279", "SystemAddress":9595233554107, "StarClass":"DC" }
{ "timestamp":"2021-06-20T02:34:37Z", "event":"StartJump", "JumpType":"Hyperspace", "StarSystem":"Stuelou WF-O d6-279", "SystemAddress":9595233554107, "StarClass":"DC" }

I've also looked in the EDMC debug logs and there are no issues I can see at the relevant times (local or UTC+8):

2021-06-20 10:27:16.799 - INFO - 10832:21416:21416 plugins.inara.new_worker:1484: sending 5 events for CmdrNameHere
2021-06-20 10:27:16.800 - DEBUG - 10832:21416:21416 plugins.inara.try_send_data:1518: sending data to API, attempt #0
2021-06-20 10:34:17.963 - INFO - 10832:21416:21416 plugins.inara.new_worker:1484: sending 2 events for CmdrNameHere
2021-06-20 10:34:17.963 - DEBUG - 10832:21416:21416 plugins.inara.try_send_data:1518: sending data to API, attempt #0
2021-06-20 10:34:54.083 - INFO - 10832:21416:21416 plugins.inara.new_worker:1484: sending 3 events for CmdrNameHere
2021-06-20 10:34:54.084 - DEBUG - 10832:21416:21416 plugins.inara.try_send_data:1518: sending data to API, attempt #0

I've been advised that Spansh has correctly updated data for the system

Other affected stars where I know I've visited (they're in my EDSM flight logs), but the star type is still incorrect:

There may be others.

EDSM-NET / FrontEnd

Star Types Not Updating #448