It is possible to re-build the data grid from the actual data files. This feature is only applicable for MetaStock compatible format and, in most cases, should only be completed when you are instructed to do so by your data service provider.
To rebuild your Portfolio Grid (when instructed by support) complete the following:
When the importation process has finished, the Portfolio Grid for the selected Data Stream will have been re-built using your datafiles. To rebuild additional data streams, repeat the process as outlined above.