Citrix PVS and secure boot certificate updates
Citrix (very belatedly) released this article: https://docs.citrix.com/en-us/provisioning/current-release/advanced-concepts/secure-boot-cert-expiration-ca-updates.html
I'm interested in this part of the article specifically:
"The CA certificate which is used to validate the Windows boot loader. When using Citrix Provisioning, the Windows boot loader is validated by the Citrix Provisioning Network Boot Program which has the CA certificate embedded. Currently, shipping versions of Citrix Provisioning only include the old CA certificate but there will be releases that include the new one as well - Citrix Provisioning will try both old and new certificate when loading the Windows Boot Loader."
As far as I can tell, the version of PVS I'm using (2203 CU7) does NOT contain the new 2023 secure boot cert in the Network Boot Program. But over a year ago, I updated the windows boot loader on all my PVS images so that it was signed by the new 2023 certificate. I also updated the .NVRAM file to include the new 2023 certs on each virtual machine that ISO boots from PVS. They still boot fine, whereas the article suggests they shouldn't, as the version of the Network Boot Program I'm using doesn't trust the new 2023 cert.
Am I missing something here in terms of how this works?