I seem to remember doing this before with a similar template problem. The last time I did it, the whole site just became a complete mess and had to delete everything. Don’t want to go through that experience again.
I’m very cautious of doing anything on a site that has a Joomlart template in it. If I use standard Joomla templates, I can quite happily change things around and correct problems with no ill effects at all. Unfortiunately, it appears you have to be VERY careful before undertaking any additions or deletions when Joomlaert is involved.
I’ll give yur suggestion a shot, but I’m very relectant to delete the existing menu item, as I’m sure a whole bunch of other problems will start.