VM display

Hello,

After migrating some virtual machines to a new Other datastore, I Notice that they are still Displayed at The virtual machine tabs of the new datastore and ex-datastoree at the same time!! But When I BROWSE datastore, I find that the VM is on the new datastore and not at the old !

I update the page,reboot the vcenter and always the same problem ,

is it a error Display In vCenter 5.1 ??

thank you