vdi of local storage repository cannot be moved to iscsi storage repository.

during the installation we choose thin provisioning, means vhd files to be stored on repositories.
After the installation we deleted the local storage repository and recreated them again with other mountpoints under /export/localSR/vol0.

After that we connect the server to our ISCSI it is impossible to move local storage vm disks to the iscsi storage repository. I can export and import them but I can't move them directly.