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Freezing Lasagne? - baking cake corningware

Now I have a lot of lasagna in the freezer for a specific day next week, but now there is a delay. Does anybody know how long it safe, keep the freshly baked lasagne in the freezer. It is packaged in many alfoil and glass in a Corningware dish. Please answer only if you know for sure how many weeks or months, it sure in the freezer can be ?????? Oh, and a carrot cake - the same story.