I have a script which refers to a field with a value list that is not longer functioning properly. The value list has been edited, yet when you are in browse mode, it appears to be the old value list that comes up.  I created a new list, and pointed the field to it, yet it does not recognize the new list and is still only showing the options in the old value list.  Any ideas?  I don't want to lose the old data, just needed to add additional options in the list.  

Welcome to the forums, 

typically if a value list that stops working usually means the underlying field indexing may have been changed and no longer able to display values. That is if the value list is based on a field in a table.

a screen shot of your current setup may help on this one -