We are unable to reproduce this, also a name is just another property, and all names are on element level (not specific to combos/checks/etc), for persistence there is nothing special about names (except you can not have duplicate names)
As I specified in the subsequent post, I was wrong: I had an issue with my backend database that did not save modified data to the repository. I had to reinstall the mysql java connector. I am really sorry for any trouble.