Restore (over 2Tb) gets to 100% then never completes

Hi, trying to restore a 4Tb system (the disk not large enough bug has now been fixed in server version 2.5.34), however it gets to 100%, never completes, doesnt look like its writing any of the EFI / boot volume as the disk isnt bootable. The server shows a restore running the ends the task after 0-2 seconds every 5-10 mins.