Ok I read your post another time. It looks like there are two issue with this VM. The first one is why Datastore01 shows up although the active files are located on Datastore04 and the second one are the files on Datstore05. Since Datstore05 does not show up in the VM's summary, it's hard to say what happened, so let's concentrate on the first issue. Do you see a reference to this datastore in the VM's current vmware.log file on Datstore04?
André