In the DefVolc interface go to « Open .save File » and select the *.save file of previous inversion. When you are questioned about the working directory « Do you want to stay in the same work directory », answer « No » and give a new directory. The previous inversion parameters will be loaded and files with the subsampled data (data.dat and covariance.dat), as well as the eventual fracture and topography files, will be copied to the new directory.