If in case, at the time of maturity of coin is sync out of the wallet means the coin will get mature or it will be cancelled and what will happen if after we
sync the wallet whether maturity of the coin will come back or it will be rejected
When the coin is getting mature and if wallet gets out of sync or shut down, You need to restart the wallet and wait till it is sync or some times you need to re-sync from '0'. But nothing to worry as you coin maturity will not be set to '0' it will continue from where it was stopped. You will be just loosing the time from the out of sync to fully sync..