- Changing automatic registration (aka the graph scanner) so that it doesn't automatically register a parameter if said parameter is used more than once in the graph. In that case, it resorts to the default "generic" registration (which doesn't make any structure assumptions about how the parameter is used).

- Changing automatic registration (aka the graph scanner) so that it doesn't automatically register a parameter if said parameter is used more than once in the graph. In that case, it resorts to the default "generic" registration (which doesn't make any structure assumptions about how the parameter is used). #1397