This is done by assuming that options with the same name do have the same meaning. Settings of options that are not present in the new PPD will be lost and options only present in the new PPD will be set to default.
Déantar é seo trí ghlacadh leis go bhfuil an chiall chéanna ag roghanna a bhfuil an t- ainm céanna orthu. Caillfidh tú socruithe nach bhfuil ar fáil sa PPD nua, agus úsáidfear réamhshocruithe le haghaidh roghanna atá sa PPD nua amháin.