[Users] shrinking of computational domain at recovery

Hi,

I want to shrink the computational domain at recovery from checkpoint. For example, I want to change the domain from initial domain size:

coordbase::xmin = 0.0 coordbase::xmax = 50.00 coordbase::ymin = 0.0 coordbase::ymax = 50.0 coordbase::zmin = 0.0 coordbase::zmax = 50.00

to

coordbase::xmin = 0.0 coordbase::xmax = 30.00 coordbase::ymin = 0.0 coordbase::ymax = 30.0 coordbase::zmin = 0.0 coordbase::zmax = 30.00

Is it possible? Is there already such a mechanism?

Thanks.

Kentaro TAKAMI