Storing a zip code in a column of an excel file is by no means an eccentric edge case. If I type 01234 into a cell, it’s not unreasonable to expect excel to sav

Storing a zip code in a column of an excel file is by no means an eccentric edge case. If I type 01234 into a cell, it’s not unreasonable to expect excel to save it (and reproduce it in e.g. a mail merge) that way.