Version Control of Models - RTC SCM vs RDM

Starting in 6.0, the CLM tool suite has added the concept of a "Global Configuration".   A global configuration is a configuration that contains contributions form multiple applications (for example, from RDM and RTC).  There are "global components" (analogous to RTC components), and there are global streams and global baselines (analogous to RTC streams and baselines).   So the global configuration is what you would use to capture which model versions go with which RTC file versions.

 I am not an expert but I think you either put it in RDM or in RTC. Putting it in both is very hard to manage. Where to put depends on the tool capabilities and I can not answer for this specific case. I think it also depends if you do more than simulink and what you want to do with the models.