Fix your Portfolio Tracker, this new one sucks!

Bad roll out, buggy, not improved, and has too many bugs.  This should not be something that you fix on the fly when traders rely on this tool to make decisions.  If you can't rely on the information contained in the tool then the tool is not of any value.  Go back, no shame in failure.  Fix this and make a real effort to fix the bugs and put back the functionality that has been removed.  Do more user testing, those of use who actually use your tool would be a start.