HEC-HMS Users Manual Utilities Current: DSS 7 Migration Utility PDF Download PDF Download page DSS 7 Migration Utility. Current page All pages DSS 7 Migration Utility The DSS 7 Migration Utility can be opened from the Tools | Data | DSS | Migrate to DSS 7 menu.A project does not have to be open to access the utility.If a project is open, the utility will default to the project directory. If a directory is specified, the utility will attempt to migrate all files in the directory and its subdirectories to HEC-DSS version 7.If a file is specified, the utility will attempt to migrate the file to HEC-DSS version 7. HEC-DSS version 6 is scheduled for decommission. We recommend migrating your projects to HEC-DSS version 7 immediately. ×