CR2011 is an 32bit app? Why it has 64bit runtime?

We are upgrading our product from 32bit to 64bit.

Once in our 32bit product, we provide an 32bit OpenAccess data source to let CR2011 to create Crystal Report by connecting to the 32bit OpenAccess data source via ODBC.

Now for our 64bit product, we provide an 64bit OpenAccess data source, now we cannot use CR2011 to connect it because the ODBC administrator 32bit will be invoked via ODBC.

So we want to search to see if there is CR2011 64bit, there is 64bit runtime installation, but there is no help for the above problem. Would you please help to give us some suggestion? Thanks a lot!