Deleted drop down list values still showing in filters

Deleted drop down list values still showing in filters

Hello,

Re: Custom Module

I renamed a number of values from a dropdown/select list.

When filtering the old names are still visible as filter options even though there are no records using the values. I effectively now have twice the filter values that I need, which is very confusing for my users. 

Is there a way to clear the filter cache perhaps? 

Simon