When attempting to add a normal A record (which has so far always worked), the Microsoft dnsmgmt app in MMC is returning a successful creation message "The host record oneworld.mydomain.com was successfully created". However, after refreshing the zone, it displays a folder icon next to "oneworld" indicating a sub domain, i.e. it is not the A record dnsmgmt said it created successfully.
This is really strange behavior that has never happened previously. We have tried this on two separate PCs and remote consoled into the primary DNS server and tried adding the same A record with the same results.
Any help is appreciated.