GLT & -xrestore

Based on an ancient post,50620,50626#msg-50626

It seems that one can conduct another glt without re-running everything you had in 3dDeconvolve. It seems that this can be done only when certain options were specified. The 3dDeconvolve documentation seems to indicate that -cbucket cprefix needs to be specified in order to run 3dDeconvolve with xrestore. Is it possible to run a glt without having specified -cbucket? I used bucket to save a stats file which contains the coeffs among other things. What is the stats file missing?

Thanks for your time and attention.