Reinstall of simp overwrites some files
I was testing the uninstall of simp-adapter (which worked cleanly). I checked for my config files and found my site module was still there with all my manifests.
I ran yum install simp-adapter and yum install simp and when it completed, I found that my default.yaml and site.pp had been overwritten and all my manifests in modules/site/manifests were gone.
These should not be overwritten if they exists or should at least be backed up.
NOTE: the hieradata/hosts/default.yaml and hieradata/hostgroups/default.yaml got overwritten also, I believe.