I have some custom OS templates...how i can use my those OS template on my another Ovirt Datacenter ??

I tried with export the template on another location and then try to add the same NFS to another datacenter ...but can not add because of the data domain already exists....so i rename the nfs folder and create it and then move the data under images from previous folder to new folder....but it didn't work....is there any way to copy or move the Templates and can use later on the same datacenter or another datacenter ???

Thanks,

Punit