Will the mobile company automatically cancel the traffic SMS exchanged with gold coins after two months?

The short messages exchanged by mobile companies with gold coins will be automatically cancelled after two months. According to the relevant public information inquired, it is best not to exchange or exchange too much traffic at the end of the month. The exchange traffic is not within the range of unclear traffic, and only the traffic messages cleared in the current month and exchanged by the mobile company with gold coins will be automatically cancelled two months later.