A sealed tin is not a suitable substitute for a freezer container. Expansion can distort or split it, and the product may have specific storage requirements.
What the observation tells you
Freezing an unopened shelf-stable product also uses capacity without necessarily providing a benefit. If only part of a tin is needed, transferring the remainder into a suitable container keeps the food identity and portion size under control. The new container does not reset storage time.
A useful next step
Read the product's freezing advice, use approved food packaging and label what was transferred. Do not open a distorted or damaged frozen tin casually.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.