Do I still keep my piggy bank data if my contract is finished

[Phil+Smith]

I have two sims. If I cancel a contract on one of the sims will the remaining data on that sim get added to the piggy bank?

[caesarome]

@Phil+Smith 

Any unused data on the sim you plan to cancel will be lost when it is cancelled,

[Phil+Smith]

Even if some of the remaining data was transferred from the piggy bank?

[caesarome]

Yes because when the sim is cancelled the data you have on it at the time it is cancelled is deleted.