Why has it changed from Central Christian Church to Central Church ?

I heard it was changed so that people access ing the Church in countries where Christianity is criminalized (including Central's mission ministries overseas) may now do so without persecution. This is covered extensively elsewhere in the GMaps Q&A section. Please look up the other questions to see the full extent of dialogues regarding this issue. God Bless and keep you.

To avoid confusion, you can come to a service and ask one of the ministers.

That is correct

There is another Central Christian that is not affiliated so we're Central Church to differentiate