Should FG_CONTENT be restricted in the SEP11 db?

Currently we ran into an issue were our SEPM (11.0.6) was not updating.  Our dbas noticed that FG_CONTENT was set to restricted and as soon as this restriction was lifted the manager version began to update.  Is it best practices to restrict the growth of these files?  Do they need to be cleaned out?  Is there a best practices guide?  SQL version is 2005.  Any advice appreciated.