Alias server not visible to virtual server owner after conversion from sub-server to parent

I just converted a virtual server which was previously a sub-server to a parent. That virtual server has an alias server defined.

After conversion, while the alias serve was still correctly attached to the now-parent, the newly created virtual server owner (Webmin login) could not see the alias in the domain list.

After logging in as root, going to the Edit screen for the alias server and clicking "Save" (without actually changing anything), the alias was then visible for the server owner again.

Seems some connection between alias and target got lost during conversion and was re-created when saving the alias.