Reclassifying a library is something which many librarians have tackled over the years. However, the task is always done with the technology and services available at the time of conversion. This is an account of reclassification using a modern Library Management System (ALMA), alongside our comments and tips on the sheer practicalities of moving every single book to another shelf location; all done, in our case, under the pall of the Covid-19 pandemic.