I tried it on one very large and one very small account.  On the larger one, the A/P module generated 146 automatic invoices that expired in 2020.  The A/R module will not access the customer by the first numbers or letters of their customer ID.  The bank rec did seem to be fine, as did the sales journal.  

On the smaller one, all the November and December GL entries were gone.  The last bank rec showing was October and should have been December.  

I'm back to last years' program.