Firewall rule corruption when using groups

I have been running into this problem ever since the group concept came out a few years ago. 

I often run into situations where creating new firewall rules or modifying existing firewall rules causes either the new rules or modified rules to not work or other random rules to not work.  What I normally do to resolve this is start detaching rules from groups and add them to new groups.  I have called sophos support many times on this issue, but unfortunately they are not equipped to deal with corruption.  Sophos support, in my experience can only handle issues with user misconfigurations and not actual problems. Has anyone else run into this?  Would be nice if groupings could work better.  It appears that the actual order of rules often does not match how they are graphically displayed.  I have seen rules at the bottom (in a group), take precedence over an un-grouped rule at the very top.  Happened just today.  Solution was to take those rules at the bottom and detach them from their group.  This is on the very latest firmware.  BTW.  Just wondering, has anyone ever upgraded firmware and had that upgrade fix anything?  My experience is that firmware upgrades break things.  Has been my experience for 99% of all firmware updates in the history of the XG.  We have used the XG at many sites from the beginning.  Oh how I miss the UTMs.  Sorry, I am clearly not a fan of sophos, but stuck with it.