If the parish has been keeping the diocesan workbook, everything already in it can come across. Nothing is written until you have seen exactly what would come in.
Choose the parish workbook
.xls or .xlsx — the workbook from the Bishop's House
The parish's own books, written into the diocesan template. It is your data, and it leaves in the format the Bishop's House already reads.
Nothing is ever rubbed out. A correction leaves the original in place, cancels it, and records what it should have said — so the books can always explain themselves.