dħul fis-seħħ retroattiv

meta ftehim jew dokument jiġi fis-seħħ b'data li hija qabel id-data attwali ta' l-istess ftehim jew dokument

In other languages:

• setting into force retroactively [EN] - when an agreement or document comes into effect but with a date before the actual real date of the same agreement or document (Inv)
• mettere in vigore retroattivamente [IT]