The reason for this is that the total accounts do not exist in the target application database. I suggest that you first copy the General Ledger / Trial Balance Report first which should contain most of the posting and Total Accounts.
Depending on the structure of the source application database, you should block copy / paste the root reports and then copy / paste the seconday reports to avoid the total to problem you have described.
A method for creating an existing application database structure to a new target application database is being considered and will be available in a future release of NewViews. It will not be ready for the upcoming release for 2.17 but I will again mention this for inclusion to NewViews.
Regards to All,