Bandwith Report not accruing data for sub-servers

Howdy,

The bandwidth report (in Logs and Reports -> Bandwidth Graph) is not showing bandwidth usage for sub-servers, when looking at the current month.

If I choose the "Parent limit and usage" view, I see what appears to be a total bandwidth for all parent and sub-servers.

However, if I choose the "Parent and sub-servers" view, only the parent's bandwidth stats are shown, all the others say "0 bytes".

This is only true for the current months, previous months work fine.

It's not a problem with just one customer though, this is the case for all customers with sub-servers.