Hi Phil,
configuration items of different admin partitions are stored in different configuration files in v11.
Please check the /config/partitions/ folder in the BIG-IP filesystem.
In v10 everything was stored in separated sections of /config/bigip.conf.
As they show up with a different paths now, perhaps it is supported now.
Especially with v11.6 we saw a couple of changes regarding administration and privileges and even the ability to rename objects.
As there are very likely more changes to come in future release I would recommend to be conservative with the naming conventions to avoid problems after updates in the future.
Thanks, Stephan