=== RUN   TestR671_RestoreThatClearsAnUpdateHoldRemovesItsUndoCopies
    r671_undo_copies_test.go:27: the lifted update hold's undo copies were left behind (remover calls: map[])
--- FAIL: TestR671_RestoreThatClearsAnUpdateHoldRemovesItsUndoCopies (0.01s)