Can’t delete forwarders in cPanel

Recently we started getting errors when trying to delete forwarders. For example:

Unable to locate the forwarder “” for account “” on domain “”.

We can still add them, though.

I tried manually edited /etc/valiases/, but it just got overwritten a few minutes later with same contents it had before, so it seems like it’s not the canonical source for that data.

You can use the iandunntest2 forwarder for as a test.