If you run the operation command will all the interfaces show present?
show interfaces terse
Since yours are the T model all the interfaces should show present in the hardware operation view.
If they do, you just need to past in a basic configuration for each ge-1/x/x port.
I've seent his happen when first creating a virtual chassis. Since the default configuration has all interface only ing fpc 0 - ge-0/x/x there is no configuration present for the other VC members when added to the VC. And I've needed to provide that as a starting point.
The auto complete is working against the existing configuration not the hardware installed.