If your ETC at that time will be on the account of the exchange, then the following can happen. The exchanges may decide not to support new coins.
Hello, that is, in their competence will, give out or not give out to their users coins and how. Did I understand you correctly? Right ?
The project developers provided a list of exchanges. Therefore, in case of doubt place your ETC in a Callisto cryptocall, or contact the technical support service of the exchange.